<br />
<b>Warning</b>:  fopen(/home/danestany/public_html/wp-content/plugins/wordfence/waf/../languages/wordfence.mo): failed to open stream: No such file or directory in <b>/home/danestany/public_html/wp-content/plugins/wordfence/waf/pomo/streams.php</b> on line <b>185</b><br />
 = false;

	/**
	 * Signifies whether the current query is for an author archive.
	 *
	 * @since 1.5.0
	 * @var bool
	 */
	public $is_author = false;

	/**
	 * Signifies whether the current query is for a category archive.
	 *
	 * @since 1.5.0
	 * @var bool
	 */
	public $is_category = false;

	/**
	 * Signifies whether the current query is for a tag archive.
	 *
	 * @since 2.3.0
	 * @var bool
	 */
	public $is_tag = false;

	/**
	 * Signifies whether the current query is for a taxonomy archive.
	 *
	 * @since 2.5.0
	 * @var bool
	 */
	public $is_tax = false;

	/**
	 * Signifies whether the current query is for a search.
	 *
	 * @since 1.5.0
	 * @var bool
	 */
	public $is_search = false;

	/**
	 * Signifies whether the current query is for a feed.
	 *
	 * @since 1.5.0
	 * @var bool
	 */
	public $is_feed = false;

	/**
	 * Signifies whether the current query is for a comment feed.
	 *
	 * @since 2.2.0
	 * @var bool
	 */
	public $is_comment_feed = false;

	/**
	 * Signifies whether the current query is for trackback endpoint call.
	 *
	 * @since 1.5.0
	 * @var bool
	 */
	public $is_trackback = false;

	/**
	 * Signifies whether the current query is for the site homepage.
	 *
	 * @since 1.5.0
	 * @var bool
	 */
	public $is_home = false;

	/**
	 * Signifies whether the current query is for the Privacy Policy page.
	 *
	 * @since 5.2.0
	 * @var bool
	 */
	public $is_privacy_policy = false;

	/**
	 * Signifies whether the current query couldn't find anything.
	 *
	 * @since 1.5.0
	 * @var bool
	 */
	public $is_404 = false;

	/**
	 * Signifies whether the current query is for an embed.
	 *
	 * @since 4.4.0
	 * @var bool
	 */
	public $is_embed = false;

	/**
	 * Signifies whether the current query is for a paged result and not for the first page.
	 *
	 * @since 1.5.0
	 * @var bool
	 */
	public $is_paged = false;

	/**
	 * Signifies whether the current query is for an administrative interface page.
	 *
	 * @since 1.5.0
	 * @var bool
	 */
	public $is_admin = false;

	/**
	 * Signifies whether the current query is for an attachment page.
	 *
	 * @since 2.0.0
	 * @var bool
	 */
	public $is_attachment = false;

	/**
	 * Signifies whether the current query is for an existing single post of any post type
	 * (post, attachment, page, custom post types).
	 *
	 * @since 2.1.0
	 * @var bool
	 */
	public $is_singular = false;

	/**
	 * Signifies whether the current query is for the robots.txt file.
	 *
	 * @since 2.1.0
	 * @var bool
	 */
	public $is_robots = false;

	/**
	 * Signifies whether the current query is for the favicon.ico file.
	 *
	 * @since 5.4.0
	 * @var bool
	 */
	public $is_favicon = false;

	/**
	 * Signifies whether the current query is for the page_for_posts page.
	 *
	 * Basically, the homepage if the option isn't set for the static homepage.
	 *
	 * @since 2.1.0
	 * @var bool
	 */
	public $is_posts_page = false;

	/**
	 * Signifies whether the current query is for a post type archive.
	 *
	 * @since 3.1.0
	 * @var bool
	 */
	public $is_post_type_archive = false;

	/**
	 * Stores the ->query_vars state like md5(serialize( $this->query_vars ) ) so we know
	 * whether we have to re-parse because something has changed
	 *
	 * @since 3.1.0
	 * @var bool|string
	 */
	private $query_vars_hash = false;

	/**
	 * Whether query vars have changed since the initial parse_query() call. Used to catch modifications to query vars made
	 * via pre_get_posts hooks.
	 *
	 * @since 3.1.1
	 */
	private $query_vars_changed = true;

	/**
	 * Set if post thumbnails are cached
	 *
	 * @since 3.2.0
	 * @var bool
	 */
	public $thumbnails_cached = false;

	/**
	 * Controls whether an attachment query should include filenames or not.
	 *
	 * @since 6.0.3
	 * @var bool
	 */
	protected $allow_query_attachment_by_filename = false;
	/**
	 * Cached list of search stopwords.
	 *
	 * @since 3.7.0
	 * @var array
	 */
	private $stopwords;

	private $compat_fields = array( 'query_vars_hash', 'query_vars_changed' );

	private $compat_methods = array( 'init_query_flags', 'parse_tax_query' );

	/**
	 * Resets query flags to false.
	 *
	 * The query flags are what page info WordPress was able to figure out.
	 *
	 * @since 2.0.0
	 */
	private function init_query_flags() {
		$this->is_single            = false;
		$this->is_preview           = false;
		$this->is_page              = false;
		$this->is_archive           = false;
		$this->is_date              = false;
		$this->is_year              = false;
		$this->is_month             = false;
		$this->is_day               = false;
		$this->is_time              = false;
		$this->is_author            = false;
		$this->is_category          = false;
		$this->is_tag               = false;
		$this->is_tax               = false;
		$this->is_search            = false;
		$this->is_feed              = false;
		$this->is_comment_feed      = false;
		$this->is_trackback         = false;
		$this->is_home              = false;
		$this->is_privacy_policy    = false;
		$this->is_404               = false;
		$this->is_paged             = false;
		$this->is_admin             = false;
		$this->is_attachment        = false;
		$this->is_singular          = false;
		$this->is_robots            = false;
		$this->is_favicon           = false;
		$this->is_posts_page        = false;
		$this->is_post_type_archive = false;
	}

	/**
	 * Initiates object properties and sets default values.
	 *
	 * @since 1.5.0
	 */
	public function init() {
		unset( $this->posts );
		unset( $this->query );
		$this->query_vars = array();
		unset( $this->queried_object );
		unset( $this->queried_object_id );
		$this->post_count   = 0;
		$this->current_post = -1;
		$this->in_the_loop  = false;
		unset( $this->request );
		unset( $this->post );
		unset( $this->comments );
		unset( $this->comment );
		$this->comment_count         = 0;
		$this->current_comment       = -1;
		$this->found_posts           = 0;
		$this->max_num_pages         = 0;
		$this->max_num_comment_pages = 0;

		$this->init_query_flags();
	}

	/**
	 * Reparse the query vars.
	 *
	 * @since 1.5.0
	 */
	public function parse_query_vars() {
		$this->parse_query();
	}

	/**
	 * Fills in the query variables, which do not exist within the parameter.
	 *
	 * @since 2.1.0
	 * @since 4.5.0 Removed the `comments_popup` public query variable.
	 *
	 * @param array $array Defined query variables.
	 * @return array Complete query variables with undefined ones filled in empty.
	 */
	public function fill_query_vars( $array ) {
		$keys = array(
			'error',
			'm',
			'p',
			'post_parent',
			'subpost',
			'subpost_id',
			'attachment',
			'attachment_id',
			'name',
			'pagename',
			'page_id',
			'second',
			'minute',
			'hour',
			'day',
			'monthnum',
			'year',
			'w',
			'category_name',
			'tag',
			'cat',
			'tag_id',
			'author',
			'author_name',
			'feed',
			'tb',
			'paged',
			'meta_key',
			'meta_value',
			'preview',
			's',
			'sentence',
			'title',
			'fields',
			'menu_order',
			'embed',
		);

		foreach ( $keys as $key ) {
			if ( ! isset( $array[ $key ] ) ) {
				$array[ $key ] = '';
			}
		}

		$array_keys = array(
			'category__in',
			'category__not_in',
			'category__and',
			'post__in',
			'post__not_in',
			'post_name__in',
			'tag__in',
			'tag__not_in',
			'tag__and',
			'tag_slug__in',
			'tag_slug__and',
			'post_parent__in',
			'post_parent__not_in',
			'author__in',
			'author__not_in',
		);

		foreach ( $array_keys as $key ) {
			if ( ! isset( $array[ $key ] ) ) {
				$array[ $key ] = array();
			}
		}
		return $array;
	}

	/**
	 * Parse a query string and set query type booleans.
	 *
	 * @since 1.5.0
	 * @since 4.2.0 Introduced the ability to order by specific clauses of a `$meta_query`, by passing the clause's
	 *              array key to `$orderby`.
	 * @since 4.4.0 Introduced `$post_name__in` and `$title` parameters. `$s` was updated to support excluded
	 *              search terms, by prepending a hyphen.
	 * @since 4.5.0 Removed the `$comments_popup` parameter.
	 *              Introduced the `$comment_status` and `$ping_status` parameters.
	 *              Introduced `RAND(x)` syntax for `$orderby`, which allows an integer seed value to random sorts.
	 * @since 4.6.0 Added 'post_name__in' support for `$orderby`. Introduced the `$lazy_load_term_meta` argument.
	 * @since 4.9.0 Introduced the `$comment_count` parameter.
	 * @since 5.1.0 Introduced the `$meta_compare_key` parameter.
	 * @since 5.3.0 Introduced the `$meta_type_key` parameter.
	 *
	 * @param string|array $query {
	 *     Optional. Array or string of Query parameters.
	 *
	 *     @type int             $attachment_id           Attachment post ID. Used for 'attachment' post_type.
	 *     @type int|string      $author                  Author ID, or comma-separated list of IDs.
	 *     @type string          $author_name             User 'user_nicename'.
	 *     @type int[]           $author__in              An array of author IDs to query from.
	 *     @type int[]           $author__not_in          An array of author IDs not to query from.
	 *     @type bool            $cache_results           Whether to cache post information. Default true.
	 *     @type int|string      $cat                     Category ID or comma-separated list of IDs (this or any children).
	 *     @type int[]           $category__and           An array of category IDs (AND in).
	 *     @type int[]           $category__in            An array of category IDs (OR in, no children).
	 *     @type int[]           $category__not_in        An array of category IDs (NOT in).
	 *     @type string          $category_name           Use category slug (not name, this or any children).
	 *     @type array|int       $comment_count           Filter results by comment count. Provide an integer to match
	 *                                                    comment count exactly. Provide an array with integer 'value'
	 *                                                    and 'compare' operator ('=', '!=', '>', '>=', '<', '<=' ) to
	 *                                                    compare against comment_count in a specific way.
	 *     @type string          $comment_status          Comment status.
	 *     @type int             $comments_per_page       The number of comments to return per page.
	 *                                                    Default 'comments_per_page' option.
	 *     @type array           $date_query              An associative array of WP_Date_Query arguments.
	 *                                                    See WP_Date_Query::__construct().
	 *     @type int             $day                     Day of the month. Default empty. Accepts numbers 1-31.
	 *     @type bool            $exact                   Whether to search by exact keyword. Default false.
	 *     @type string          $fields                  Post fields to query for. Accepts:
	 *                                                    - '' Returns an array of complete post objects (`WP_Post[]`).
	 *                                                    - 'ids' Returns an array of post IDs (`int[]`).
	 *                                                    - 'id=>parent' Returns an associative array of parent post IDs,
	 *                                                      keyed by post ID (`int[]`).
	 *                                                    Default ''.
	 *     @type int             $hour                    Hour of the day. Default empty. Accepts numbers 0-23.
	 *     @type int|bool        $ignore_sticky_posts     Whether to ignore sticky posts or not. Setting this to false
	 *                                                    excludes stickies from 'post__in'. Accepts 1|true, 0|false.
	 *                                                    Default false.
	 *     @type int             $m                       Combination YearMonth. Accepts any four-digit year and month
	 *                                                    numbers 1-12. Default empty.
	 *     @type string|string[] $meta_key                Meta key or keys to filter by.
	 *     @type string|string[] $meta_value              Meta value or values to filter by.
	 *     @type string          $meta_compare            MySQL operator used for comparing the meta value.
	 *                                                    See WP_Meta_Query::__construct for accepted values and default value.
	 *     @type string          $meta_compare_key        MySQL operator used for comparing the meta key.
	 *                                                    See WP_Meta_Query::__construct for accepted values and default value.
	 *     @type string          $meta_type               MySQL data type that the meta_value column will be CAST to for comparisons.
	 *                                                    See WP_Meta_Query::__construct for accepted values and default value.
	 *     @type string          $meta_type_key           MySQL data type that the meta_key column will be CAST to for comparisons.
	 *                                                    See WP_Meta_Query::__construct for accepted values and default value.
	 *     @type array           $meta_query              An associative array of WP_Meta_Query arguments.
	 *                                                    See WP_Meta_Query::__construct for accepted values.
	 *     @type int             $menu_order              The menu order of the posts.
	 *     @type int             $minute                  Minute of the hour. Default empty. Accepts numbers 0-59.
	 *     @type int             $monthnum                The two-digit month. Default empty. Accepts numbers 1-12.
	 *     @type string          $name                    Post slug.
	 *     @type bool            $nopaging                Show all posts (true) or paginate (false). Default false.
	 *     @type bool            $no_found_rows           Whether to skip counting the total rows found. Enabling can improve
	 *                                                    performance. Default false.
	 *     @type int             $offset                  The number of posts to offset before retrieval.
	 *     @type string          $order                   Designates ascending or descending order of posts. Default 'DESC'.
	 *                                                    Accepts 'ASC', 'DESC'.
	 *     @type string|array    $orderby                 Sort retrieved posts by parameter. One or more options may be passed.
	 *                                                    To use 'meta_value', or 'meta_value_num', 'meta_key=keyname' must be
	 *                                                    also be defined. To sort by a specific `$meta_query` clause, use that
	 *                                                    clause's array key. Accepts:
	 *                                                    - 'none'
	 *                                                    - 'name'
	 *                                                    - 'author'
	 *                                                    - 'date'
	 *                                                    - 'title'
	 *                                                    - 'modified'
	 *                                                    - 'menu_order'
	 *                                                    - 'parent'
	 *                                                    - 'ID'
	 *                                                    - 'rand'
	 *                                                    - 'relevance'
	 *                                                    - 'RAND(x)' (where 'x' is an integer seed value)
	 *                                                    - 'comment_count'
	 *                                                    - 'meta_value'
	 *                                                    - 'meta_value_num'
	 *                                                    - 'post__in'
	 *                                                    - 'post_name__in'
	 *                                                    - 'post_parent__in'
	 *                                                    - The array keys of `$meta_query`.
	 *                                                    Default is 'date', except when a search is being performed, when
	 *                                                    the default is 'relevance'.
	 *     @type int             $p                       Post ID.
	 *     @type int             $page                    Show the number of posts that would show up on page X of a
	 *                                                    static front page.
	 *     @type int             $paged                   The number of the current page.
	 *     @type int             $page_id                 Page ID.
	 *     @type string          $pagename                Page slug.
	 *     @type string          $perm                    Show posts if user has the appropriate capability.
	 *     @type string          $ping_status             Ping status.
	 *     @type int[]           $post__in                An array of post IDs to retrieve, sticky posts will be included.
	 *     @type int[]           $post__not_in            An array of post IDs not to retrieve. Note: a string of comma-
	 *                                                    separated IDs will NOT work.
	 *     @type string          $post_mime_type          The mime type of the post. Used for 'attachment' post_type.
	 *     @type string[]        $post_name__in           An array of post slugs that results must match.
	 *     @type int             $post_parent             Page ID to retrieve child pages for. Use 0 to only retrieve
	 *                                                    top-level pages.
	 *     @type int[]           $post_parent__in         An array containing parent page IDs to query child pages from.
	 *     @type int[]           $post_parent__not_in     An array containing parent page IDs not to query child pages from.
	 *     @type string|string[] $post_type               A post type slug (string) or array of post type slugs.
	 *                                                    Default 'any' if using 'tax_query'.
	 *     @type string|string[] $post_status             A post status (string) or array of post statuses.
	 *     @type int             $posts_per_page          The number of posts to query for. Use -1 to request all posts.
	 *     @type int             $posts_per_archive_page  The number of posts to query for by archive page. Overrides
	 *                                                    'posts_per_page' when is_archive(), or is_search() are true.
	 *     @type string          $s                       Search keyword(s). Prepending a term with a hyphen will
	 *                                                    exclude posts matching that term. Eg, 'pillow -sofa' will
	 *                                                    return posts containing 'pillow' but not 'sofa'. The
	 *                                                    character used for exclusion can be modified using the
	 *                                                    the 'wp_query_search_exclusion_prefix' filter.
	 *     @type int             $second                  Second of the minute. Default empty. Accepts numbers 0-59.
	 *     @type bool            $sentence                Whether to search by phrase. Default false.
	 *     @type bool            $suppress_filters        Whether to suppress filters. Default false.
	 *     @type string          $tag                     Tag slug. Comma-separated (either), Plus-separated (all).
	 *     @type int[]           $tag__and                An array of tag IDs (AND in).
	 *     @type int[]           $tag__in                 An array of tag IDs (OR in).
	 *     @type int[]           $tag__not_in             An array of tag IDs (NOT in).
	 *     @type int             $tag_id                  Tag id or comma-separated list of IDs.
	 *     @type string[]        $tag_slug__and           An array of tag slugs (AND in).
	 *     @type string[]        $tag_slug__in            An array of tag slugs (OR in). unless 'ignore_sticky_posts' is
	 *                                                    true. Note: a string of comma-separated IDs will NOT work.
	 *     @type array           $tax_query               An associative array of WP_Tax_Query arguments.
	 *                                                    See WP_Tax_Query->__construct().
	 *     @type string          $title                   Post title.
	 *     @type bool            $update_post_meta_cache  Whether to update the post meta cache. Default true.
	 *     @type bool            $update_post_term_cache  Whether to update the post term cache. Default true.
	 *     @type bool            $lazy_load_term_meta     Whether to lazy-load term meta. Setting to false will
	 *                                                    disable cache priming for term meta, so that each
	 *                                                    get_term_meta() call will hit the database.
	 *                                                    Defaults to the value of `$update_post_term_cache`.
	 *     @type int             $w                       The week number of the year. Default empty. Accepts numbers 0-53.
	 *     @type int             $year                    The four-digit year. Default empty. Accepts any four-digit year.
	 * }
	 */
	public function parse_query( $query = '' ) {
		if ( ! empty( $query ) ) {
			$this->init();
			$this->query      = wp_parse_args( $query );
			$this->query_vars = $this->query;
		} elseif ( ! isset( $this->query ) ) {
			$this->query = $this->query_vars;
		}

		$this->query_vars         = $this->fill_query_vars( $this->query_vars );
		$qv                       = &$this->query_vars;
		$this->query_vars_changed = true;

		if ( ! empty( $qv['robots'] ) ) {
			$this->is_robots = true;
		} elseif ( ! empty( $qv['favicon'] ) ) {
			$this->is_favicon = true;
		}

		if ( ! is_scalar( $qv['p'] ) || (int) $qv['p'] < 0 ) {
			$qv['p']     = 0;
			$qv['error'] = '404';
		} else {
			$qv['p'] = (int) $qv['p'];
		}

		$qv['page_id']  = absint( $qv['page_id'] );
		$qv['year']     = absint( $qv['year'] );
		$qv['monthnum'] = absint( $qv['monthnum'] );
		$qv['day']      = absint( $qv['day'] );
		$qv['w']        = absint( $qv['w'] );
		$qv['m']        = is_scalar( $qv['m'] ) ? preg_replace( '|[^0-9]|', '', $qv['m'] ) : '';
		$qv['paged']    = absint( $qv['paged'] );
		$qv['cat']      = preg_replace( '|[^0-9,-]|', '', $qv['cat'] );    // Comma-separated list of positive or negative integers.
		$qv['author']   = preg_replace( '|[^0-9,-]|', '', $qv['author'] ); // Comma-separated list of positive or negative integers.
		$qv['pagename'] = trim( $qv['pagename'] );
		$qv['name']     = trim( $qv['name'] );
		$qv['title']    = trim( $qv['title'] );
		if ( '' !== $qv['hour'] ) {
			$qv['hour'] = absint( $qv['hour'] );
		}
		if ( '' !== $qv['minute'] ) {
			$qv['minute'] = absint( $qv['minute'] );
		}
		if ( '' !== $qv['second'] ) {
			$qv['second'] = absint( $qv['second'] );
		}
		if ( '' !== $qv['menu_order'] ) {
			$qv['menu_order'] = absint( $qv['menu_order'] );
		}

		// Fairly large, potentially too large, upper bound for search string lengths.
		if ( ! is_scalar( $qv['s'] ) || ( ! empty( $qv['s'] ) && strlen( $qv['s'] ) > 1600 ) ) {
			$qv['s'] = '';
		}

		// Compat. Map subpost to attachment.
		if ( '' != $qv['subpost'] ) {
			$qv['attachment'] = $qv['subpost'];
		}
		if ( '' != $qv['subpost_id'] ) {
			$qv['attachment_id'] = $qv['subpost_id'];
		}

		$qv['attachment_id'] = absint( $qv['attachment_id'] );

		if ( ( '' !== $qv['attachment'] ) || ! empty( $qv['attachment_id'] ) ) {
			$this->is_single     = true;
			$this->is_attachment = true;
		} elseif ( '' !== $qv['name'] ) {
			$this->is_single = true;
		} elseif ( $qv['p'] ) {
			$this->is_single = true;
		} elseif ( '' !== $qv['pagename'] || ! empty( $qv['page_id'] ) ) {
			$this->is_page   = true;
			$this->is_single = false;
		} else {
			// Look for archive queries. Dates, categories, authors, search, post type archives.

			if ( isset( $this->query['s'] ) ) {
				$this->is_search = true;
			}

			if ( '' !== $qv['second'] ) {
				$this->is_time = true;
				$this->is_date = true;
			}

			if ( '' !== $qv['minute'] ) {
				$this->is_time = true;
				$this->is_date = true;
			}

			if ( '' !== $qv['hour'] ) {
				$this->is_time = true;
				$this->is_date = true;
			}

			if ( $qv['day'] ) {
				if ( ! $this->is_date ) {
					$date = sprintf( '%04d-%02d-%02d', $qv['year'], $qv['monthnum'], $qv['day'] );
					if ( $qv['monthnum'] && $qv['year'] && ! wp_checkdate( $qv['monthnum'], $qv['day'], $qv['year'], $date ) ) {
						$qv['error'] = '404';
					} else {
						$this->is_day  = true;
						$this->is_date = true;
					}
				}
			}

			if ( $qv['monthnum'] ) {
				if ( ! $this->is_date ) {
					if ( 12 < $qv['monthnum'] ) {
						$qv['error'] = '404';
					} else {
						$this->is_month = true;
						$this->is_date  = true;
					}
				}
			}

			if ( $qv['year'] ) {
				if ( ! $this->is_date ) {
					$this->is_year = true;
					$this->is_date = true;
				}
			}

			if ( $qv['m'] ) {
				$this->is_date = true;
				if ( strlen( $qv['m'] ) > 9 ) {
					$this->is_time = true;
				} elseif ( strlen( $qv['m'] ) > 7 ) {
					$this->is_day = true;
				} elseif ( strlen( $qv['m'] ) > 5 ) {
					$this->is_month = true;
				} else {
					$this->is_year = true;
				}
			}

			if ( $qv['w'] ) {
				$this->is_date = true;
			}

			$this->query_vars_hash = false;
			$this->parse_tax_query( $qv );

			foreach ( $this->tax_query->queries as $tax_query ) {
				if ( ! is_array( $tax_query ) ) {
					continue;
				}

				if ( isset( $tax_query['operator'] ) && 'NOT IN' !== $tax_query['operator'] ) {
					switch ( $tax_query['taxonomy'] ) {
						case 'category':
							$this->is_category = true;
							break;
						case 'post_tag':
							$this->is_tag = true;
							break;
						default:
							$this->is_tax = true;
					}
				}
			}
			unset( $tax_query );

			if ( empty( $qv['author'] ) || ( '0' == $qv['author'] ) ) {
				$this->is_author = false;
			} else {
				$this->is_author = true;
			}

			if ( '' !== $qv['author_name'] ) {
				$this->is_author = true;
			}

			if ( ! empty( $qv['post_type'] ) && ! is_array( $qv['post_type'] ) ) {
				$post_type_obj = get_post_type_object( $qv['post_type'] );
				if ( ! empty( $post_type_obj->has_archive ) ) {
					$this->is_post_type_archive = true;
				}
			}

			if ( $this->is_post_type_archive || $this->is_date || $this->is_author || $this->is_category || $this->is_tag || $this->is_tax ) {
				$this->is_archive = true;
			}
		}

		if ( '' != $qv['feed'] ) {
			$this->is_feed = true;
		}

		if ( '' != $qv['embed'] ) {
			$this->is_embed = true;
		}

		if ( '' != $qv['tb'] ) {
			$this->is_trackback = true;
		}

		if ( '' != $qv['paged'] && ( (int) $qv['paged'] > 1 ) ) {
			$this->is_paged = true;
		}

		// If we're previewing inside the write screen.
		if ( '' != $qv['preview'] ) {
			$this->is_preview = true;
		}

		if ( is_admin() ) {
			$this->is_admin = true;
		}

		if ( false !== strpos( $qv['feed'], 'comments-' ) ) {
			$qv['feed']         = str_replace( 'comments-', '', $qv['feed'] );
			$qv['withcomments'] = 1;
		}

		$this->is_singular = $this->is_single || $this->is_page || $this->is_attachment;

		if ( $this->is_feed && ( ! empty( $qv['withcomments'] ) || ( empty( $qv['withoutcomments'] ) && $this->is_singular ) ) ) {
			$this->is_comment_feed = true;
		}

		if ( ! ( $this->is_singular || $this->is_archive || $this->is_search || $this->is_feed
				|| ( defined( 'REST_REQUEST' ) && REST_REQUEST && $this->is_main_query() )
				|| $this->is_trackback || $this->is_404 || $this->is_admin || $this->is_robots || $this->is_favicon ) ) {
			$this->is_home = true;
		}

		// Correct `is_*` for 'page_on_front' and 'page_for_posts'.
		if ( $this->is_home && 'page' === get_option( 'show_on_front' ) && get_option( 'page_on_front' ) ) {
			$_query = wp_parse_args( $this->query );
			// 'pagename' can be set and empty depending on matched rewrite rules. Ignore an empty 'pagename'.
			if ( isset( $_query['pagename'] ) && '' === $_query['pagename'] ) {
				unset( $_query['pagename'] );
			}

			unset( $_query['embed'] );

			if ( empty( $_query ) || ! array_diff( array_keys( $_query ), array( 'preview', 'page', 'paged', 'cpage' ) ) ) {
				$this->is_page = true;
				$this->is_home = false;
				$qv['page_id'] = get_option( 'page_on_front' );
				// Correct <!--nextpage--> for 'page_on_front'.
				if ( ! empty( $qv['paged'] ) ) {
					$qv['page'] = $qv['paged'];
					unset( $qv['paged'] );
				}
			}
		}

		if ( '' !== $qv['pagename'] ) {
			$this->queried_object = get_page_by_path( $qv['pagename'] );

			if ( $this->queried_object && 'attachment' === $this->queried_object->post_type ) {
				if ( preg_match( '/^[^%]*%(?:postname)%/', get_option( 'permalink_structure' ) ) ) {
					// See if we also have a post with the same slug.
					$post = get_page_by_path( $qv['pagename'], OBJECT, 'post' );
					if ( $post ) {
						$this->queried_object = $post;
						$this->is_page        = false;
						$this->is_single      = true;
					}
				}
			}

			if ( ! empty( $this->queried_object ) ) {
				$this->queried_object_id = (int) $this->queried_object->ID;
			} else {
				unset( $this->queried_object );
			}

			if ( 'page' === get_option( 'show_on_front' ) && isset( $this->queried_object_id ) && get_option( 'page_for_posts' ) == $this->queried_object_id ) {
				$this->is_page       = false;
				$this->is_home       = true;
				$this->is_posts_page = true;
			}

			if ( isset( $this->queried_object_id ) && get_option( 'wp_page_for_privacy_policy' ) == $this->queried_object_id ) {
				$this->is_privacy_policy = true;
			}
		}

		if ( $qv['page_id'] ) {
			if ( 'page' === get_option( 'show_on_front' ) && get_option( 'page_for_posts' ) == $qv['page_id'] ) {
				$this->is_page       = false;
				$this->is_home       = true;
				$this->is_posts_page = true;
			}

			if ( get_option( 'wp_page_for_privacy_policy' ) == $qv['page_id'] ) {
				$this->is_privacy_policy = true;
			}
		}

		if ( ! empty( $qv['post_type'] ) ) {
			if ( is_array( $qv['post_type'] ) ) {
				$qv['post_type'] = array_map( 'sanitize_key', $qv['post_type'] );
			} else {
				$qv['post_type'] = sanitize_key( $qv['post_type'] );
			}
		}

		if ( ! empty( $qv['post_status'] ) ) {
			if ( is_array( $qv['post_status'] ) ) {
				$qv['post_status'] = array_map( 'sanitize_key', $qv['post_status'] );
			} else {
				$qv['post_status'] = preg_replace( '|[^a-z0-9_,-]|', '', $qv['post_status'] );
			}
		}

		if ( $this->is_posts_page && ( ! isset( $qv['withcomments'] ) || ! $qv['withcomments'] ) ) {
			$this->is_comment_feed = false;
		}

		$this->is_singular = $this->is_single || $this->is_page || $this->is_attachment;
		// Done correcting `is_*` for 'page_on_front' and 'page_for_posts'.

		if ( '404' == $qv['error'] ) {
			$this->set_404();
		}

		$this->is_embed = $this->is_embed && ( $this->is_singular || $this->is_404 );

		$this->query_vars_hash    = md5( serialize( $this->query_vars ) );
		$this->query_vars_changed = false;

		/**
		 * Fires after the main query vars have been parsed.
		 *
		 * @since 1.5.0
		 *
		 * @param WP_Query $query The WP_Query instance (passed by reference).
		 */
		do_action_ref_array( 'parse_query', array( &$this ) );
	}

	/**
	 * Parses various taxonomy related query vars.
	 *
	 * For BC, this method is not marked as protected. See [28987].
	 *
	 * @since 3.1.0
	 *
	 * @param array $q The query variables. Passed by reference.
	 */
	public function parse_tax_query( &$q ) {
		if ( ! empty( $q['tax_query'] ) && is_array( $q['tax_query'] ) ) {
			$tax_query = $q['tax_query'];
		} else {
			$tax_query = array();
		}

		if ( ! empty( $q['taxonomy'] ) && ! empty( $q['term'] ) ) {
			$tax_query[] = array(
				'taxonomy' => $q['taxonomy'],
				'terms'    => array( $q['term'] ),
				'field'    => 'slug',
			);
		}

		foreach ( get_taxonomies( array(), 'objects' ) as $taxonomy => $t ) {
			if ( 'post_tag' === $taxonomy ) {
				continue; // Handled further down in the $q['tag'] block.
			}

			if ( $t->query_var && ! empty( $q[ $t->query_var ] ) ) {
				$tax_query_defaults = array(
					'taxonomy' => $taxonomy,
					'field'    => 'slug',
				);

				if ( ! empty( $t->rewrite['hierarchical'] ) ) {
					$q[ $t->query_var ] = wp_basename( $q[ $t->query_var ] );
				}

				$term = $q[ $t->query_var ];

				if ( is_array( $term ) ) {
					$term = implode( ',', $term );
				}

				if ( strpos( $term, '+' ) !== false ) {
					$terms = preg_split( '/[+]+/', $term );
					foreach ( $terms as $term ) {
						$tax_query[] = array_merge(
							$tax_query_defaults,
							array(
								'terms' => array( $term ),
							)
						);
					}
				} else {
					$tax_query[] = array_merge(
						$tax_query_defaults,
						array(
							'terms' => preg_split( '/[,]+/', $term ),
						)
					);
				}
			}
		}

		// If query string 'cat' is an array, implode it.
		if ( is_array( $q['cat'] ) ) {
			$q['cat'] = implode( ',', $q['cat'] );
		}

		// Category stuff.

		if ( ! empty( $q['cat'] ) && ! $this->is_singular ) {
			$cat_in     = array();
			$cat_not_in = array();

			$cat_array = preg_split( '/[,\s]+/', urldecode( $q['cat'] ) );
			$cat_array = array_map( 'intval', $cat_array );
			$q['cat']  = implode( ',', $cat_array );

			foreach ( $cat_array as $cat ) {
				if ( $cat > 0 ) {
					$cat_in[] = $cat;
				} elseif ( $cat < 0 ) {
					$cat_not_in[] = abs( $cat );
				}
			}

			if ( ! empty( $cat_in ) ) {
				$tax_query[] = array(
					'taxonomy'         => 'category',
					'terms'            => $cat_in,
					'field'            => 'term_id',
					'include_children' => true,
				);
			}

			if ( ! empty( $cat_not_in ) ) {
				$tax_query[] = array(
					'taxonomy'         => 'category',
					'terms'            => $cat_not_in,
					'field'            => 'term_id',
					'operator'         => 'NOT IN',
					'include_children' => true,
				);
			}
			unset( $cat_array, $cat_in, $cat_not_in );
		}

		if ( ! empty( $q['category__and'] ) && 1 === count( (array) $q['category__and'] ) ) {
			$q['category__and'] = (array) $q['category__and'];
			if ( ! isset( $q['category__in'] ) ) {
				$q['category__in'] = array();
			}
			$q['category__in'][] = absint( reset( $q['category__and'] ) );
			unset( $q['category__and'] );
		}

		if ( ! empty( $q['category__in'] ) ) {
			$q['category__in'] = array_map( 'absint', array_unique( (array) $q['category__in'] ) );
			$tax_query[]       = array(
				'taxonomy'         => 'category',
				'terms'            => $q['category__in'],
				'field'            => 'term_id',
				'include_children' => false,
			);
		}

		if ( ! empty( $q['category__not_in'] ) ) {
			$q['category__not_in'] = array_map( 'absint', array_unique( (array) $q['category__not_in'] ) );
			$tax_query[]           = array(
				'taxonomy'         => 'category',
				'terms'            => $q['category__not_in'],
				'operator'         => 'NOT IN',
				'include_children' => false,
			);
		}

		if ( ! empty( $q['category__and'] ) ) {
			$q['category__and'] = array_map( 'absint', array_unique( (array) $q['category__and'] ) );
			$tax_query[]        = array(
				'taxonomy'         => 'category',
				'terms'            => $q['category__and'],
				'field'            => 'term_id',
				'operator'         => 'AND',
				'include_children' => false,
			);
		}

		// If query string 'tag' is array, implode it.
		if ( is_array( $q['tag'] ) ) {
			$q['tag'] = implode( ',', $q['tag'] );
		}

		// Tag stuff.

		if ( '' !== $q['tag'] && ! $this->is_singular && $this->query_vars_changed ) {
			if ( strpos( $q['tag'], ',' ) !== false ) {
				$tags = preg_split( '/[,\r\n\t ]+/', $q['tag'] );
				foreach ( (array) $tags as $tag ) {
					$tag                 = sanitize_term_field( 'slug', $tag, 0, 'post_tag', 'db' );
					$q['tag_slug__in'][] = $tag;
				}
			} elseif ( preg_match( '/[+\r\n\t ]+/', $q['tag'] ) || ! empty( $q['cat'] ) ) {
				$tags = preg_split( '/[+\r\n\t ]+/', $q['tag'] );
				foreach ( (array) $tags as $tag ) {
					$tag                  = sanitize_term_field( 'slug', $tag, 0, 'post_tag', 'db' );
					$q['tag_slug__and'][] = $tag;
				}
			} else {
				$q['tag']            = sanitize_term_field( 'slug', $q['tag'], 0, 'post_tag', 'db' );
				$q['tag_slug__in'][] = $q['tag'];
			}
		}

		if ( ! empty( $q['tag_id'] ) ) {
			$q['tag_id'] = absint( $q['tag_id'] );
			$tax_query[] = array(
				'taxonomy' => 'post_tag',
				'terms'    => $q['tag_id'],
			);
		}

		if ( ! empty( $q['tag__in'] ) ) {
			$q['tag__in'] = array_map( 'absint', array_unique( (array) $q['tag__in'] ) );
			$tax_query[]  = array(
				'taxonomy' => 'post_tag',
				'terms'    => $q['tag__in'],
			);
		}

		if ( ! empty( $q['tag__not_in'] ) ) {
			$q['tag__not_in'] = array_map( 'absint', array_unique( (array) $q['tag__not_in'] ) );
			$tax_query[]      = array(
				'taxonomy' => 'post_tag',
				'terms'    => $q['tag__not_in'],
				'operator' => 'NOT IN',
			);
		}

		if ( ! empty( $q['tag__and'] ) ) {
			$q['tag__and'] = array_map( 'absint', array_unique( (array) $q['tag__and'] ) );
			$tax_query[]   = array(
				'taxonomy' => 'post_tag',
				'terms'    => $q['tag__and'],
				'operator' => 'AND',
			);
		}

		if ( ! empty( $q['tag_slug__in'] ) ) {
			$q['tag_slug__in'] = array_map( 'sanitize_title_for_query', array_unique( (array) $q['tag_slug__in'] ) );
			$tax_query[]       = array(
				'taxonomy' => 'post_tag',
				'terms'    => $q['tag_slug__in'],
				'field'    => 'slug',
			);
		}

		if ( ! empty( $q['tag_slug__and'] ) ) {
			$q['tag_slug__and'] = array_map( 'sanitize_title_for_query', array_unique( (array) $q['tag_slug__and'] ) );
			$tax_query[]        = array(
				'taxonomy' => 'post_tag',
				'terms'    => $q['tag_slug__and'],
				'field'    => 'slug',
				'operator' => 'AND',
			);
		}

		$this->tax_query = new WP_Tax_Query( $tax_query );

		/**
		 * Fires after taxonomy-related query vars have been parsed.
		 *
		 * @since 3.7.0
		 *
		 * @param WP_Query $query The WP_Query instance.
		 */
		do_action( 'parse_tax_query', $this );
	}

	/**
	 * Generates SQL for the WHERE clause based on passed search terms.
	 *
	 * @since 3.7.0
	 *
	 * @global wpdb $wpdb WordPress database abstraction object.
	 *
	 * @param array $q Query variables.
	 * @return string WHERE clause.
	 */
	protected function parse_search( &$q ) {
		global $wpdb;

		$search = '';

		// Added slashes screw with quote grouping when done early, so done later.
		$q['s'] = stripslashes( $q['s'] );
		if ( empty( $_GET['s'] ) && $this->is_main_query() ) {
			$q['s'] = urldecode( $q['s'] );
		}
		// There are no line breaks in <input /> fields.
		$q['s']                  = str_replace( array( "\r", "\n" ), '', $q['s'] );
		$q['search_terms_count'] = 1;
		if ( ! empty( $q['sentence'] ) ) {
			$q['search_terms'] = array( $q['s'] );
		} else {
			if ( preg_match_all( '/".*?("|$)|((?<=[\t ",+])|^)[^\t ",+]+/', $q['s'], $matches ) ) {
				$q['search_terms_count'] = count( $matches[0] );
				$q['search_terms']       = $this->parse_search_terms( $matches[0] );
				// If the search string has only short terms or stopwords, or is 10+ terms long, match it as sentence.
				if ( empty( $q['search_terms'] ) || count( $q['search_terms'] ) > 9 ) {
					$q['search_terms'] = array( $q['s'] );
				}
			} else {
				$q['search_terms'] = array( $q['s'] );
			}
		}

		$n                         = ! empty( $q['exact'] ) ? '' : '%';
		$searchand                 = '';
		$q['search_orderby_title'] = array();

		/**
		 * Filters the prefix that indicates that a search term should be excluded from results.
		 *
		 * @since 4.7.0
		 *
		 * @param string $exclusion_prefix The prefix. Default '-'. Returning
		 *                                 an empty value disables exclusions.
		 */
		$exclusion_prefix = apply_filters( 'wp_query_search_exclusion_prefix', '-' );

		foreach ( $q['search_terms'] as $term ) {
			// If there is an $exclusion_prefix, terms prefixed with it should be excluded.
			$exclude = $exclusion_prefix && ( substr( $term, 0, 1 ) === $exclusion_prefix );
			if ( $exclude ) {
				$like_op  = 'NOT LIKE';
				$andor_op = 'AND';
				$term     = substr( $term, 1 );
			} else {
				$like_op  = 'LIKE';
				$andor_op = 'OR';
			}

			if ( $n && ! $exclude ) {
				$like                        = '%' . $wpdb->esc_like( $term ) . '%';
				$q['search_orderby_title'][] = $wpdb->prepare( "{$wpdb->posts}.post_title LIKE %s", $like );
			}

			$like      = $n . $wpdb->esc_like( $term ) . $n;

			if ( ! empty( $this->allow_query_attachment_by_filename ) ) {
				$search .= $wpdb->prepare( "{$searchand}(({$wpdb->posts}.post_title $like_op %s) $andor_op ({$wpdb->posts}.post_excerpt $like_op %s) $andor_op ({$wpdb->posts}.post_content $like_op %s) $andor_op (sq1.meta_value $like_op %s))", $like, $like, $like, $like );
			} else {
				$search .= $wpdb->prepare( "{$searchand}(({$wpdb->posts}.post_title $like_op %s) $andor_op ({$wpdb->posts}.post_excerpt $like_op %s) $andor_op ({$wpdb->posts}.post_content $like_op %s))", $like, $like, $like );
			}
			$searchand = ' AND ';
		}

		if ( ! empty( $search ) ) {
			$search = " AND ({$search}) ";
			if ( ! is_user_logged_in() ) {
				$search .= " AND ({$wpdb->posts}.post_password = '') ";
			}
		}

		return $search;
	}

	/**
	 * Check if the terms are suitable for searching.
	 *
	 * Uses an array of stopwords (terms) that are excluded from the separate
	 * term matching when searching for posts. The list of English stopwords is
	 * the approximate search engines list, and is translatable.
	 *
	 * @since 3.7.0
	 *
	 * @param string[] $terms Array of terms to check.
	 * @return string[] Terms that are not stopwords.
	 */
	protected function parse_search_terms( $terms ) {
		$strtolower = function_exists( 'mb_strtolower' ) ? 'mb_strtolower' : 'strtolower';
		$checked    = array();

		$stopwords = $this->get_search_stopwords();

		foreach ( $terms as $term ) {
			// Keep before/after spaces when term is for exact match.
			if ( preg_match( '/^".+"$/', $term ) ) {
				$term = trim( $term, "\"'" );
			} else {
				$term = trim( $term, "\"' " );
			}

			// Avoid single A-Z and single dashes.
			if ( ! $term || ( 1 === strlen( $term ) && preg_match( '/^[a-z\-]$/i', $term ) ) ) {
				continue;
			}

			if ( in_array( call_user_func( $strtolower, $term ), $stopwords, true ) ) {
				continue;
			}

			$checked[] = $term;
		}

		return $checked;
	}

	/**
	 * Retrieve stopwords used when parsing search terms.
	 *
	 * @since 3.7.0
	 *
	 * @return string[] Stopwords.
	 */
	protected function get_search_stopwords() {
		if ( isset( $this->stopwords ) ) {
			return $this->stopwords;
		}

		/*
		 * translators: This is a comma-separated list of very common words that should be excluded from a search,
		 * like a, an, and the. These are usually called "stopwords". You should not simply translate these individual
		 * words into your language. Instead, look for and provide commonly accepted stopwords in your language.
		 */
		$words = explode(
			',',
			_x(
				'about,an,are,as,at,be,by,com,for,from,how,in,is,it,of,on,or,that,the,this,to,was,what,when,where,who,will,with,www',
				'Comma-separated list of search stopwords in your language'
			)
		);

		$stopwords = array();
		foreach ( $words as $word ) {
			$word = trim( $word, "\r\n\t " );
			if ( $word ) {
				$stopwords[] = $word;
			}
		}

		/**
		 * Filters stopwords used when parsing search terms.
		 *
		 * @since 3.7.0
		 *
		 * @param string[] $stopwords Array of stopwords.
		 */
		$this->stopwords = apply_filters( 'wp_search_stopwords', $stopwords );
		return $this->stopwords;
	}

	/**
	 * Generates SQL for the ORDER BY condition based on passed search terms.
	 *
	 * @since 3.7.0
	 *
	 * @global wpdb $wpdb WordPress database abstraction object.
	 *
	 * @param array $q Query variables.
	 * @return string ORDER BY clause.
	 */
	protected function parse_search_order( &$q ) {
		global $wpdb;

		if ( $q['search_terms_count'] > 1 ) {
			$num_terms = count( $q['search_orderby_title'] );

			// If the search terms contain negative queries, don't bother ordering by sentence matches.
			$like = '';
			if ( ! preg_match( '/(?:\s|^)\-/', $q['s'] ) ) {
				$like = '%' . $wpdb->esc_like( $q['s'] ) . '%';
			}

			$search_orderby = '';

			// Sentence match in 'post_title'.
			if ( $like ) {
				$search_orderby .= $wpdb->prepare( "WHEN {$wpdb->posts}.post_title LIKE %s THEN 1 ", $like );
			}

			// Sanity limit, sort as sentence when more than 6 terms
			// (few searches are longer than 6 terms and most titles are not).
			if ( $num_terms < 7 ) {
				// All words in title.
				$search_orderby .= 'WHEN ' . implode( ' AND ', $q['search_orderby_title'] ) . ' THEN 2 ';
				// Any word in title, not needed when $num_terms == 1.
				if ( $num_terms > 1 ) {
					$search_orderby .= 'WHEN ' . implode( ' OR ', $q['search_orderby_title'] ) . ' THEN 3 ';
				}
			}

			// Sentence match in 'post_content' and 'post_excerpt'.
			if ( $like ) {
				$search_orderby .= $wpdb->prepare( "WHEN {$wpdb->posts}.post_excerpt LIKE %s THEN 4 ", $like );
				$search_orderby .= $wpdb->prepare( "WHEN {$wpdb->posts}.post_content LIKE %s THEN 5 ", $like );
			}

			if ( $search_orderby ) {
				$search_orderby = '(CASE ' . $search_orderby . 'ELSE 6 END)';
			}
		} else {
			// Single word or sentence search.
			$search_orderby = reset( $q['search_orderby_title'] ) . ' DESC';
		}

		return $search_orderby;
	}

	/**
	 * Converts the given orderby alias (if allowed) to a properly-prefixed value.
	 *
	 * @since 4.0.0
	 *
	 * @global wpdb $wpdb WordPress database abstraction object.
	 *
	 * @param string $orderby Alias for the field to order by.
	 * @return string|false Table-prefixed value to used in the ORDER clause. False otherwise.
	 */
	protected function parse_orderby( $orderby ) {
		global $wpdb;

		// Used to filter values.
		$allowed_keys = array(
			'post_name',
			'post_author',
			'post_date',
			'post_title',
			'post_modified',
			'post_parent',
			'post_type',
			'name',
			'author',
			'date',
			'title',
			'modified',
			'parent',
			'type',
			'ID',
			'menu_order',
			'comment_count',
			'rand',
			'post__in',
			'post_parent__in',
			'post_name__in',
		);

		$primary_meta_key   = '';
		$primary_meta_query = false;
		$meta_clauses       = $this->meta_query->get_clauses();
		if ( ! empty( $meta_clauses ) ) {
			$primary_meta_query = reset( $meta_clauses );

			if ( ! empty( $primary_meta_query['key'] ) ) {
				$primary_meta_key = $primary_meta_query['key'];
				$allowed_keys[]   = $primary_meta_key;
			}

			$allowed_keys[] = 'meta_value';
			$allowed_keys[] = 'meta_value_num';
			$allowed_keys   = array_merge( $allowed_keys, array_keys( $meta_clauses ) );
		}

		// If RAND() contains a seed value, sanitize and add to allowed keys.
		$rand_with_seed = false;
		if ( preg_match( '/RAND\(([0-9]+)\)/i', $orderby, $matches ) ) {
			$orderby        = sprintf( 'RAND(%s)', (int) $matches[1] );
			$allowed_keys[] = $orderby;
			$rand_with_seed = true;
		}

		if ( ! in_array( $orderby, $allowed_keys, true ) ) {
			return false;
		}

		$orderby_clause = '';

		switch ( $orderby ) {
			case 'post_name':
			case 'post_author':
			case 'post_date':
			case 'post_title':
			case 'post_modified':
			case 'post_parent':
			case 'post_type':
			case 'ID':
			case 'menu_order':
			case 'comment_count':
				$orderby_clause = "{$wpdb->posts}.{$orderby}";
				break;
			case 'rand':
				$orderby_clause = 'RAND()';
				break;
			case $primary_meta_key:
			case 'meta_value':
				if ( ! empty( $primary_meta_query['type'] ) ) {
					$orderby_clause = "CAST({$primary_meta_query['alias']}.meta_value AS {$primary_meta_query['cast']})";
				} else {
					$orderby_clause = "{$primary_meta_query['alias']}.meta_value";
				}
				break;
			case 'meta_value_num':
				$orderby_clause = "{$primary_meta_query['alias']}.meta_value+0";
				break;
			case 'post__in':
				if ( ! empty( $this->query_vars['post__in'] ) ) {
					$orderby_clause = "FIELD({$wpdb->posts}.ID," . implode( ',', array_map( 'absint', $this->query_vars['post__in'] ) ) . ')';
				}
				break;
			case 'post_parent__in':
				if ( ! empty( $this->query_vars['post_parent__in'] ) ) {
					$orderby_clause = "FIELD( {$wpdb->posts}.post_parent," . implode( ', ', array_map( 'absint', $this->query_vars['post_parent__in'] ) ) . ' )';
				}
				break;
			case 'post_name__in':
				if ( ! empty( $this->query_vars['post_name__in'] ) ) {
					$post_name__in        = array_map( 'sanitize_title_for_query', $this->query_vars['post_name__in'] );
					$post_name__in_string = "'" . implode( "','", $post_name__in ) . "'";
					$orderby_clause       = "FIELD( {$wpdb->posts}.post_name," . $post_name__in_string . ' )';
				}
				break;
			default:
				if ( array_key_exists( $orderby, $meta_clauses ) ) {
					// $orderby corresponds to a meta_query clause.
					$meta_clause    = $meta_clauses[ $orderby ];
					$orderby_clause = "CAST({$meta_clause['alias']}.meta_value AS {$meta_clause['cast']})";
				} elseif ( $rand_with_seed ) {
					$orderby_clause = $orderby;
				} else {
					// Default: order by post field.
					$orderby_clause = "{$wpdb->posts}.post_" . sanitize_key( $orderby );
				}

				break;
		}

		return $orderby_clause;
	}

	/**
	 * Parse an 'order' query variable and cast it to ASC or DESC as necessary.
	 *
	 * @since 4.0.0
	 *
	 * @param string $order The 'order' query variable.
	 * @return string The sanitized 'order' query variable.
	 */
	protected function parse_order( $order ) {
		if ( ! is_string( $order ) || empty( $order ) ) {
			return 'DESC';
		}

		if ( 'ASC' === strtoupper( $order ) ) {
			return 'ASC';
		} else {
			return 'DESC';
		}
	}

	/**
	 * Sets the 404 property and saves whether query is feed.
	 *
	 * @since 2.0.0
	 */
	public function set_404() {
		$is_feed = $this->is_feed;

		$this->init_query_flags();
		$this->is_404 = true;

		$this->is_feed = $is_feed;

		/**
		 * Fires after a 404 is triggered.
		 *
		 * @since 5.5.0
		 *
		 * @param WP_Query $query The WP_Query instance (passed by reference).
		 */
		do_action_ref_array( 'set_404', array( $this ) );
	}

	/**
	 * Retrieves the value of a query variable.
	 *
	 * @since 1.5.0
	 * @since 3.9.0 The `$default` argument was introduced.
	 *
	 * @param string $query_var Query variable key.
	 * @param mixed  $default   Optional. Value to return if the query variable is not set. Default empty string.
	 * @return mixed Contents of the query variable.
	 */
	public function get( $query_var, $default = '' ) {
		if ( isset( $this->query_vars[ $query_var ] ) ) {
			return $this->query_vars[ $query_var ];
		}

		return $default;
	}

	/**
	 * Sets the value of a query variable.
	 *
	 * @since 1.5.0
	 *
	 * @param string $query_var Query variable key.
	 * @param mixed  $value     Query variable value.
	 */
	public function set( $query_var, $value ) {
		$this->query_vars[ $query_var ] = $value;
	}

	/**
	 * Retrieves an array of posts based on query variables.
	 *
	 * There are a few filters and actions that can be used to modify the post
	 * database query.
	 *
	 * @since 1.5.0
	 *
	 * @global wpdb $wpdb WordPress database abstraction object.
	 *
	 * @return WP_Post[]|int[] Array of post objects or post IDs.
	 */
	public function get_posts() {
		global $wpdb;

		$this->parse_query();

		/**
		 * Fires after the query variable object is created, but before the actual query is run.
		 *
		 * Note: If using conditional tags, use the method versions within the passed instance
		 * (e.g. $this->is_main_query() instead of is_main_query()). This is because the functions
		 * like is_main_query() test against the global $wp_query instance, not the passed one.
		 *
		 * @since 2.0.0
		 *
		 * @param WP_Query $query The WP_Query instance (passed by reference).
		 */
		do_action_ref_array( 'pre_get_posts', array( &$this ) );

		// Shorthand.
		$q = &$this->query_vars;

		// Fill again in case 'pre_get_posts' unset some vars.
		$q = $this->fill_query_vars( $q );

		/**
		 * Filters whether an attachment query should include filenames or not.
		 *
		 * @since 6.0.3
		 *
		 * @param bool $allow_query_attachment_by_filename Whether or not to include filenames.
		 */
		$this->allow_query_attachment_by_filename = apply_filters( 'wp_allow_query_attachment_by_filename', false );
		remove_all_filters( 'wp_allow_query_attachment_by_filename' );

		// Parse meta query.
		$this->meta_query = new WP_Meta_Query();
		$this->meta_query->parse_query_vars( $q );

		// Set a flag if a 'pre_get_posts' hook changed the query vars.
		$hash = md5( serialize( $this->query_vars ) );
		if ( $hash != $this->query_vars_hash ) {
			$this->query_vars_changed = true;
			$this->query_vars_hash    = $hash;
		}
		unset( $hash );

		// First let's clear some variables.
		$distinct         = '';
		$whichauthor      = '';
		$whichmimetype    = '';
		$where            = '';
		$limits           = '';
		$join             = '';
		$search           = '';
		$groupby          = '';
		$post_status_join = false;
		$page             = 1;

		if ( isset( $q['caller_get_posts'] ) ) {
			_deprecated_argument(
				'WP_Query',
				'3.1.0',
				sprintf(
					/* translators: 1: caller_get_posts, 2: ignore_sticky_posts */
					__( '%1$s is deprecated. Use %2$s instead.' ),
					'<code>caller_get_posts</code>',
					'<code>ignore_sticky_posts</code>'
				)
			);

			if ( ! isset( $q['ignore_sticky_posts'] ) ) {
				$q['ignore_sticky_posts'] = $q['caller_get_posts'];
			}
		}

		if ( ! isset( $q['ignore_sticky_posts'] ) ) {
			$q['ignore_sticky_posts'] = false;
		}

		if ( ! isset( $q['suppress_filters'] ) ) {
			$q['suppress_filters'] = false;
		}

		if ( ! isset( $q['cache_results'] ) ) {
			if ( wp_using_ext_object_cache() ) {
				$q['cache_results'] = false;
			} else {
				$q['cache_results'] = true;
			}
		}

		if ( ! isset( $q['update_post_term_cache'] ) ) {
			$q['update_post_term_cache'] = true;
		}

		if ( ! isset( $q['lazy_load_term_meta'] ) ) {
			$q['lazy_load_term_meta'] = $q['update_post_term_cache'];
		}

		if ( ! isset( $q['update_post_meta_cache'] ) ) {
			$q['update_post_meta_cache'] = true;
		}

		if ( ! isset( $q['post_type'] ) ) {
			if ( $this->is_search ) {
				$q['post_type'] = 'any';
			} else {
				$q['post_type'] = '';
			}
		}
		$post_type = $q['post_type'];
		if ( empty( $q['posts_per_page'] ) ) {
			$q['posts_per_page'] = get_option( 'posts_per_page' );
		}
		if ( isset( $q['showposts'] ) && $q['showposts'] ) {
			$q['showposts']      = (int) $q['showposts'];
			$q['posts_per_page'] = $q['showposts'];
		}
		if ( ( isset( $q['posts_per_archive_page'] ) && 0 != $q['posts_per_archive_page'] ) && ( $this->is_archive || $this->is_search ) ) {
			$q['posts_per_page'] = $q['posts_per_archive_page'];
		}
		if ( ! isset( $q['nopaging'] ) ) {
			if ( -1 == $q['posts_per_page'] ) {
				$q['nopaging'] = true;
			} else {
				$q['nopaging'] = false;
			}
		}

		if ( $this->is_feed ) {
			// This overrides 'posts_per_page'.
			if ( ! empty( $q['posts_per_rss'] ) ) {
				$q['posts_per_page'] = $q['posts_per_rss'];
			} else {
				$q['posts_per_page'] = get_option( 'posts_per_rss' );
			}
			$q['nopaging'] = false;
		}
		$q['posts_per_page'] = (int) $q['posts_per_page'];
		if ( $q['posts_per_page'] < -1 ) {
			$q['posts_per_page'] = abs( $q['posts_per_page'] );
		} elseif ( 0 == $q['posts_per_page'] ) {
			$q['posts_per_page'] = 1;
		}

		if ( ! isset( $q['comments_per_page'] ) || 0 == $q['comments_per_page'] ) {
			$q['comments_per_page'] = get_option( 'comments_per_page' );
		}

		if ( $this->is_home && ( empty( $this->query ) || 'true' === $q['preview'] ) && ( 'page' === get_option( 'show_on_front' ) ) && get_option( 'page_on_front' ) ) {
			$this->is_page = true;
			$this->is_home = false;
			$q['page_id']  = get_option( 'page_on_front' );
		}

		if ( isset( $q['page'] ) ) {
			$q['page'] = trim( $q['page'], '/' );
			$q['page'] = absint( $q['page'] );
		}

		// If true, forcibly turns off SQL_CALC_FOUND_ROWS even when limits are present.
		if ( isset( $q['no_found_rows'] ) ) {
			$q['no_found_rows'] = (bool) $q['no_found_rows'];
		} else {
			$q['no_found_rows'] = false;
		}

		switch ( $q['fields'] ) {
			case 'ids':
				$fields = "{$wpdb->posts}.ID";
				break;
			case 'id=>parent':
				$fields = "{$wpdb->posts}.ID, {$wpdb->posts}.post_parent";
				break;
			default:
				$fields = "{$wpdb->posts}.*";
		}

		if ( '' !== $q['menu_order'] ) {
			$where .= " AND {$wpdb->posts}.menu_order = " . $q['menu_order'];
		}
		// The "m" parameter is meant for months but accepts datetimes of varying specificity.
		if ( $q['m'] ) {
			$where .= " AND YEAR({$wpdb->posts}.post_date)=" . substr( $q['m'], 0, 4 );
			if ( strlen( $q['m'] ) > 5 ) {
				$where .= " AND MONTH({$wpdb->posts}.post_date)=" . substr( $q['m'], 4, 2 );
			}
			if ( strlen( $q['m'] ) > 7 ) {
				$where .= " AND DAYOFMONTH({$wpdb->posts}.post_date)=" . substr( $q['m'], 6, 2 );
			}
			if ( strlen( $q['m'] ) > 9 ) {
				$where .= " AND HOUR({$wpdb->posts}.post_date)=" . substr( $q['m'], 8, 2 );
			}
			if ( strlen( $q['m'] ) > 11 ) {
				$where .= " AND MINUTE({$wpdb->posts}.post_date)=" . substr( $q['m'], 10, 2 );
			}
			if ( strlen( $q['m'] ) > 13 ) {
				$where .= " AND SECOND({$wpdb->posts}.post_date)=" . substr( $q['m'], 12, 2 );
			}
		}

		// Handle the other individual date parameters.
		$date_parameters = array();

		if ( '' !== $q['hour'] ) {
			$date_parameters['hour'] = $q['hour'];
		}

		if ( '' !== $q['minute'] ) {
			$date_parameters['minute'] = $q['minute'];
		}

		if ( '' !== $q['second'] ) {
			$date_parameters['second'] = $q['second'];
		}

		if ( $q['year'] ) {
			$date_parameters['year'] = $q['year'];
		}

		if ( $q['monthnum'] ) {
			$date_parameters['monthnum'] = $q['monthnum'];
		}

		if ( $q['w'] ) {
			$date_parameters['week'] = $q['w'];
		}

		if ( $q['day'] ) {
			$date_parameters['day'] = $q['day'];
		}

		if ( $date_parameters ) {
			$date_query = new WP_Date_Query( array( $date_parameters ) );
			$where     .= $date_query->get_sql();
		}
		unset( $date_parameters, $date_query );

		// Handle complex date queries.
		if ( ! empty( $q['date_query'] ) ) {
			$this->date_query = new WP_Date_Query( $q['date_query'] );
			$where           .= $this->date_query->get_sql();
		}

		// If we've got a post_type AND it's not "any" post_type.
		if ( ! empty( $q['post_type'] ) && 'any' !== $q['post_type'] ) {
			foreach ( (array) $q['post_type'] as $_post_type ) {
				$ptype_obj = get_post_type_object( $_post_type );
				if ( ! $ptype_obj || ! $ptype_obj->query_var || empty( $q[ $ptype_obj->query_var ] ) ) {
					continue;
				}

				if ( ! $ptype_obj->hierarchical ) {
					// Non-hierarchical post types can directly use 'name'.
					$q['name'] = $q[ $ptype_obj->query_var ];
				} else {
					// Hierarchical post types will operate through 'pagename'.
					$q['pagename'] = $q[ $ptype_obj->query_var ];
					$q['name']     = '';
				}

				// Only one request for a slug is possible, this is why name & pagename are overwritten above.
				break;
			} // End foreach.
			unset( $ptype_obj );
		}

		if ( '' !== $q['title'] ) {
			$where .= $wpdb->prepare( " AND {$wpdb->posts}.post_title = %s", stripslashes( $q['title'] ) );
		}

		// Parameters related to 'post_name'.
		if ( '' !== $q['name'] ) {
			$q['name'] = sanitize_title_for_query( $q['name'] );
			$where    .= " AND {$wpdb->posts}.post_name = '" . $q['name'] . "'";
		} elseif ( '' !== $q['pagename'] ) {
			if ( isset( $this->queried_object_id ) ) {
				$reqpage = $this->queried_object_id;
			} else {
				if ( 'page' !== $q['post_type'] ) {
					foreach ( (array) $q['post_type'] as $_post_type ) {
						$ptype_obj = get_post_type_object( $_post_type );
						if ( ! $ptype_obj || ! $ptype_obj->hierarchical ) {
							continue;
						}

						$reqpage = get_page_by_path( $q['pagename'], OBJECT, $_post_type );
						if ( $reqpage ) {
							break;
						}
					}
					unset( $ptype_obj );
				} else {
					$reqpage = get_page_by_path( $q['pagename'] );
				}
				if ( ! empty( $reqpage ) ) {
					$reqpage = $reqpage->ID;
				} else {
					$reqpage = 0;
				}
			}

			$page_for_posts = get_option( 'page_for_posts' );
			if ( ( 'page' !== get_option( 'show_on_front' ) ) || empty( $page_for_posts ) || ( $reqpage != $page_for_posts ) ) {
				$q['pagename'] = sanitize_title_for_query( wp_basename( $q['pagename'] ) );
				$q['name']     = $q['pagename'];
				$where        .= " AND ({$wpdb->posts}.ID = '$reqpage')";
				$reqpage_obj   = get_post( $reqpage );
				if ( is_object( $reqpage_obj ) && 'attachment' === $reqpage_obj->post_type ) {
					$this->is_attachment = true;
					$post_type           = 'attachment';
					$q['post_type']      = 'attachment';
					$this->is_page       = true;
					$q['attachment_id']  = $reqpage;
				}
			}
		} elseif ( '' !== $q['attachment'] ) {
			$q['attachment'] = sanitize_title_for_query( wp_basename( $q['attachment'] ) );
			$q['name']       = $q['attachment'];
			$where          .= " AND {$wpdb->posts}.post_name = '" . $q['attachment'] . "'";
		} elseif ( is_array( $q['post_name__in'] ) && ! empty( $q['post_name__in'] ) ) {
			$q['post_name__in'] = array_map( 'sanitize_title_for_query', $q['post_name__in'] );
			$post_name__in      = "'" . implode( "','", $q['post_name__in'] ) . "'";
			$where             .= " AND {$wpdb->posts}.post_name IN ($post_name__in)";
		}

		// If an attachment is requested by number, let it supersede any post number.
		if ( $q['attachment_id'] ) {
			$q['p'] = absint( $q['attachment_id'] );
		}

		// If a post number is specified, load that post.
		if ( $q['p'] ) {
			$where .= " AND {$wpdb->posts}.ID = " . $q['p'];
		} elseif ( $q['post__in'] ) {
			$post__in = implode( ',', array_map( 'absint', $q['post__in'] ) );
			$where   .= " AND {$wpdb->posts}.ID IN ($post__in)";
		} elseif ( $q['post__not_in'] ) {
			$post__not_in = implode( ',', array_map( 'absint', $q['post__not_in'] ) );
			$where       .= " AND {$wpdb->posts}.ID NOT IN ($post__not_in)";
		}

		if ( is_numeric( $q['post_parent'] ) ) {
			$where .= $wpdb->prepare( " AND {$wpdb->posts}.post_parent = %d ", $q['post_parent'] );
		} elseif ( $q['post_parent__in'] ) {
			$post_parent__in = implode( ',', array_map( 'absint', $q['post_parent__in'] ) );
			$where          .= " AND {$wpdb->posts}.post_parent IN ($post_parent__in)";
		} elseif ( $q['post_parent__not_in'] ) {
			$post_parent__not_in = implode( ',', array_map( 'absint', $q['post_parent__not_in'] ) );
			$where              .= " AND {$wpdb->posts}.post_parent NOT IN ($post_parent__not_in)";
		}

		if ( $q['page_id'] ) {
			if ( ( 'page' !== get_option( 'show_on_front' ) ) || ( get_option( 'page_for_posts' ) != $q['page_id'] ) ) {
				$q['p'] = $q['page_id'];
				$where  = " AND {$wpdb->posts}.ID = " . $q['page_id'];
			}
		}

		// If a search pattern is specified, load the posts that match.
		if ( strlen( $q['s'] ) ) {
			$search = $this->parse_search( $q );
		}

		if ( ! $q['suppress_filters'] ) {
			/**
			 * Filters the search SQL that is used in the WHERE clause of WP_Query.
			 *
			 * @since 3.0.0
			 *
			 * @param string   $search Search SQL for WHERE clause.
			 * @param WP_Query $query  The current WP_Query object.
			 */
			$search = apply_filters_ref_array( 'posts_search', array( $search, &$this ) );
		}

		// Taxonomies.
		if ( ! $this->is_singular ) {
			$this->parse_tax_query( $q );

			$clauses = $this->tax_query->get_sql( $wpdb->posts, 'ID' );

			$join  .= $clauses['join'];
			$where .= $clauses['where'];
		}

		if ( $this->is_tax ) {
			if ( empty( $post_type ) ) {
				// Do a fully inclusive search for currently registered post types of queried taxonomies.
				$post_type  = array();
				$taxonomies = array_keys( $this->tax_query->queried_terms );
				foreach ( get_post_types( array( 'exclude_from_search' => false ) ) as $pt ) {
					$object_taxonomies = 'attachment' === $pt ? get_taxonomies_for_attachments() : get_object_taxonomies( $pt );
					if ( array_intersect( $taxonomies, $object_taxonomies ) ) {
						$post_type[] = $pt;
					}
				}
				if ( ! $post_type ) {
					$post_type = 'any';
				} elseif ( count( $post_type ) == 1 ) {
					$post_type = $post_type[0];
				}

				$post_status_join = true;
			} elseif ( in_array( 'attachment', (array) $post_type, true ) ) {
				$post_status_join = true;
			}
		}

		/*
		 * Ensure that 'taxonomy', 'term', 'term_id', 'cat', and
		 * 'category_name' vars are set for backward compatibility.
		 */
		if ( ! empty( $this->tax_query->queried_terms ) ) {

			/*
			 * Set 'taxonomy', 'term', and 'term_id' to the
			 * first taxonomy other than 'post_tag' or 'category'.
			 */
			if ( ! isset( $q['taxonomy'] ) ) {
				foreach ( $this->tax_query->queried_terms as $queried_taxonomy => $queried_items ) {
					if ( empty( $queried_items['terms'][0] ) ) {
						continue;
					}

					if ( ! in_array( $queried_taxonomy, array( 'category', 'post_tag' ), true ) ) {
						$q['taxonomy'] = $queried_taxonomy;

						if ( 'slug' === $queried_items['field'] ) {
							$q['term'] = $queried_items['terms'][0];
						} else {
							$q['term_id'] = $queried_items['terms'][0];
						}

						// Take the first one we find.
						break;
					}
				}
			}

			// 'cat', 'category_name', 'tag_id'.
			foreach ( $this->tax_query->queried_terms as $queried_taxonomy => $queried_items ) {
				if ( empty( $queried_items['terms'][0] ) ) {
					continue;
				}

				if ( 'category' === $queried_taxonomy ) {
					$the_cat = get_term_by( $queried_items['field'], $queried_items['terms'][0], 'category' );
					if ( $the_cat ) {
						$this->set( 'cat', $the_cat->term_id );
						$this->set( 'category_name', $the_cat->slug );
					}
					unset( $the_cat );
				}

				if ( 'post_tag' === $queried_taxonomy ) {
					$the_tag = get_term_by( $queried_items['field'], $queried_items['terms'][0], 'post_tag' );
					if ( $the_tag ) {
						$this->set( 'tag_id', $the_tag->term_id );
					}
					unset( $the_tag );
				}
			}
		}

		if ( ! empty( $this->tax_query->queries ) || ! empty( $this->meta_query->queries ) || ! empty( $this->allow_query_attachment_by_filename ) ) {
			$groupby = "{$wpdb->posts}.ID";
		}

		// Author/user stuff.

		if ( ! empty( $q['author'] ) && '0' != $q['author'] ) {
			$q['author'] = addslashes_gpc( '' . urldecode( $q['author'] ) );
			$authors     = array_unique( array_map( 'intval', preg_split( '/[,\s]+/', $q['author'] ) ) );
			foreach ( $authors as $author ) {
				$key         = $author > 0 ? 'author__in' : 'author__not_in';
				$q[ $key ][] = abs( $author );
			}
			$q['author'] = implode( ',', $authors );
		}

		if ( ! empty( $q['author__not_in'] ) ) {
			$author__not_in = implode( ',', array_map( 'absint', array_unique( (array) $q['author__not_in'] ) ) );
			$where         .= " AND {$wpdb->posts}.post_author NOT IN ($author__not_in) ";
		} elseif ( ! empty( $q['author__in'] ) ) {
			$author__in = implode( ',', array_map( 'absint', array_unique( (array) $q['author__in'] ) ) );
			$where     .= " AND {$wpdb->posts}.post_author IN ($author__in) ";
		}

		// Author stuff for nice URLs.

		if ( '' !== $q['author_name'] ) {
			if ( strpos( $q['author_name'], '/' ) !== false ) {
				$q['author_name'] = explode( '/', $q['author_name'] );
				if ( $q['author_name'][ count( $q['author_name'] ) - 1 ] ) {
					$q['author_name'] = $q['author_name'][ count( $q['author_name'] ) - 1 ]; // No trailing slash.
				} else {
					$q['author_name'] = $q['author_name'][ count( $q['author_name'] ) - 2 ]; // There was a trailing slash.
				}
			}
			$q['author_name'] = sanitize_title_for_query( $q['author_name'] );
			$q['author']      = get_user_by( 'slug', $q['author_name'] );
			if ( $q['author'] ) {
				$q['author'] = $q['author']->ID;
			}
			$whichauthor .= " AND ({$wpdb->posts}.post_author = " . absint( $q['author'] ) . ')';
		}

		// Matching by comment count.
		if ( isset( $q['comment_count'] ) ) {
			// Numeric comment count is converted to array format.
			if ( is_numeric( $q['comment_count'] ) ) {
				$q['comment_count'] = array(
					'value' => (int) $q['comment_count'],
				);
			}

			if ( isset( $q['comment_count']['value'] ) ) {
				$q['comment_count'] = array_merge(
					array(
						'compare' => '=',
					),
					$q['comment_count']
				);

				// Fallback for invalid compare operators is '='.
				$compare_operators = array( '=', '!=', '>', '>=', '<', '<=' );
				if ( ! in_array( $q['comment_count']['compare'], $compare_operators, true ) ) {
					$q['comment_count']['compare'] = '=';
				}

				$where .= $wpdb->prepare( " AND {$wpdb->posts}.comment_count {$q['comment_count']['compare']} %d", $q['comment_count']['value'] );
			}
		}

		// MIME-Type stuff for attachment browsing.

		if ( isset( $q['post_mime_type'] ) && '' !== $q['post_mime_type'] ) {
			$whichmimetype = wp_post_mime_type_where( $q['post_mime_type'], $wpdb->posts );
		}
		$where .= $search . $whichauthor . $whichmimetype;

		if ( ! empty( $this->allow_query_attachment_by_filename ) ) {
			$join .= " LEFT JOIN {$wpdb->postmeta} AS sq1 ON ( {$wpdb->posts}.ID = sq1.post_id AND sq1.meta_key = '_wp_attached_file' )";
		}

		if ( ! empty( $this->meta_query->queries ) ) {
			$clauses = $this->meta_query->get_sql( 'post', $wpdb->posts, 'ID', $this );
			$join   .= $clauses['join'];
			$where  .= $clauses['where'];
		}

		$rand = ( isset( $q['orderby'] ) && 'rand' === $q['orderby'] );
		if ( ! isset( $q['order'] ) ) {
			$q['order'] = $rand ? '' : 'DESC';
		} else {
			$q['order'] = $rand ? '' : $this->parse_order( $q['order'] );
		}

		// These values of orderby should ignore the 'order' parameter.
		$force_asc = array( 'post__in', 'post_name__in', 'post_parent__in' );
		if ( isset( $q['orderby'] ) && in_array( $q['orderby'], $force_asc, true ) ) {
			$q['order'] = '';
		}

		// Order by.
		if ( empty( $q['orderby'] ) ) {
			/*
			 * Boolean false or empty array blanks out ORDER BY,
			 * while leaving the value unset or otherwise empty sets the default.
			 */
			if ( isset( $q['orderby'] ) && ( is_array( $q['orderby'] ) || false === $q['orderby'] ) ) {
				$orderby = '';
			} else {
				$orderby = "{$wpdb->posts}.post_date " . $q['order'];
			}
		} elseif ( 'none' === $q['orderby'] ) {
			$orderby = '';
		} else {
			$orderby_array = array();
			if ( is_array( $q['orderby'] ) ) {
				foreach ( $q['orderby'] as $_orderby => $order ) {
					$orderby = addslashes_gpc( urldecode( $_orderby ) );
					$parsed  = $this->parse_orderby( $orderby );

					if ( ! $parsed ) {
						continue;
					}

					$orderby_array[] = $parsed . ' ' . $this->parse_order( $order );
				}
				$orderby = implode( ', ', $orderby_array );

			} else {
				$q['orderby'] = urldecode( $q['orderby'] );
				$q['orderby'] = addslashes_gpc( $q['orderby'] );

				foreach ( explode( ' ', $q['orderby'] ) as $i => $orderby ) {
					$parsed = $this->parse_orderby( $orderby );
					// Only allow certain values for safety.
					if ( ! $parsed ) {
						continue;
					}

					$orderby_array[] = $parsed;
				}
				$orderby = implode( ' ' . $q['order'] . ', ', $orderby_array );

				if ( empty( $orderby ) ) {
					$orderby = "{$wpdb->posts}.post_date " . $q['order'];
				} elseif ( ! empty( $q['order'] ) ) {
					$orderby .= " {$q['order']}";
				}
			}
		}

		// Order search results by relevance only when another "orderby" is not specified in the query.
		if ( ! empty( $q['s'] ) ) {
			$search_orderby = '';
			if ( ! empty( $q['search_orderby_title'] ) && ( empty( $q['orderby'] ) && ! $this->is_feed ) || ( isset( $q['orderby'] ) && 'relevance' === $q['orderby'] ) ) {
				$search_orderby = $this->parse_search_order( $q );
			}

			if ( ! $q['suppress_filters'] ) {
				/**
				 * Filters the ORDER BY used when ordering search results.
				 *
				 * @since 3.7.0
				 *
				 * @param string   $search_orderby The ORDER BY clause.
				 * @param WP_Query $query          The current WP_Query instance.
				 */
				$search_orderby = apply_filters( 'posts_search_orderby', $search_orderby, $this );
			}

			if ( $search_orderby ) {
				$orderby = $orderby ? $search_orderby . ', ' . $orderby : $search_orderby;
			}
		}

		if ( is_array( $post_type ) && count( $post_type ) > 1 ) {
			$post_type_cap = 'multiple_post_type';
		} else {
			if ( is_array( $post_type ) ) {
				$post_type = reset( $post_type );
			}
			$post_type_object = get_post_type_object( $post_type );
			if ( empty( $post_type_object ) ) {
				$post_type_cap = $post_type;
			}
		}

		if ( isset( $q['post_password'] ) ) {
			$where .= $wpdb->prepare( " AND {$wpdb->posts}.post_password = %s", $q['post_password'] );
			if ( empty( $q['perm'] ) ) {
				$q['perm'] = 'readable';
			}
		} elseif ( isset( $q['has_password'] ) ) {
			$where .= sprintf( " AND {$wpdb->posts}.post_password %s ''", $q['has_password'] ? '!=' : '=' );
		}

		if ( ! empty( $q['comment_status'] ) ) {
			$where .= $wpdb->prepare( " AND {$wpdb->posts}.comment_status = %s ", $q['comment_status'] );
		}

		if ( ! empty( $q['ping_status'] ) ) {
			$where .= $wpdb->prepare( " AND {$wpdb->posts}.ping_status = %s ", $q['ping_status'] );
		}

		$skip_post_status = false;
		if ( 'any' === $post_type ) {
			$in_search_post_types = get_post_types( array( 'exclude_from_search' => false ) );
			if ( empty( $in_search_post_types ) ) {
				$post_type_where  = ' AND 1=0 ';
				$skip_post_status = true;
			} else {
				$post_type_where = " AND {$wpdb->posts}.post_type IN ('" . implode( "', '", array_map( 'esc_sql', $in_search_post_types ) ) . "')";
			}
		} elseif ( ! empty( $post_type ) && is_array( $post_type ) ) {
			$post_type_where = " AND {$wpdb->posts}.post_type IN ('" . implode( "', '", esc_sql( $post_type ) ) . "')";
		} elseif ( ! empty( $post_type ) ) {
			$post_type_where  = $wpdb->prepare( " AND {$wpdb->posts}.post_type = %s", $post_type );
			$post_type_object = get_post_type_object( $post_type );
		} elseif ( $this->is_attachment ) {
			$post_type_where  = " AND {$wpdb->posts}.post_type = 'attachment'";
			$post_type_object = get_post_type_object( 'attachment' );
		} elseif ( $this->is_page ) {
			$post_type_where  = " AND {$wpdb->posts}.post_type = 'page'";
			$post_type_object = get_post_type_object( 'page' );
		} else {
			$post_type_where  = " AND {$wpdb->posts}.post_type = 'post'";
			$post_type_object = get_post_type_object( 'post' );
		}

		$edit_cap = 'edit_post';
		$read_cap = 'read_post';

		if ( ! empty( $post_type_object ) ) {
			$edit_others_cap  = $post_type_object->cap->edit_others_posts;
			$read_private_cap = $post_type_object->cap->read_private_posts;
		} else {
			$edit_others_cap  = 'edit_others_' . $post_type_cap . 's';
			$read_private_cap = 'read_private_' . $post_type_cap . 's';
		}

		$user_id = get_current_user_id();

		$q_status = array();
		if ( $skip_post_status ) {
			$where .= $post_type_where;
		} elseif ( ! empty( $q['post_status'] ) ) {

			$where .= $post_type_where;

			$statuswheres = array();
			$q_status     = $q['post_status'];
			if ( ! is_array( $q_status ) ) {
				$q_status = explode( ',', $q_status );
			}
			$r_status = array();
			$p_status = array();
			$e_status = array();
			if ( in_array( 'any', $q_status, true ) ) {
				foreach ( get_post_stati( array( 'exclude_from_search' => true ) ) as $status ) {
					if ( ! in_array( $status, $q_status, true ) ) {
						$e_status[] = "{$wpdb->posts}.post_status <> '$status'";
					}
				}
			} else {
				foreach ( get_post_stati() as $status ) {
					if ( in_array( $status, $q_status, true ) ) {
						if ( 'private' === $status ) {
							$p_status[] = "{$wpdb->posts}.post_status = '$status'";
						} else {
							$r_status[] = "{$wpdb->posts}.post_status = '$status'";
						}
					}
				}
			}

			if ( empty( $q['perm'] ) || 'readable' !== $q['perm'] ) {
				$r_status = array_merge( $r_status, $p_status );
				unset( $p_status );
			}

			if ( ! empty( $e_status ) ) {
				$statuswheres[] = '(' . implode( ' AND ', $e_status ) . ')';
			}
			if ( ! empty( $r_status ) ) {
				if ( ! empty( $q['perm'] ) && 'editable' === $q['perm'] && ! current_user_can( $edit_others_cap ) ) {
					$statuswheres[] = "({$wpdb->posts}.post_author = $user_id " . 'AND (' . implode( ' OR ', $r_status ) . '))';
				} else {
					$statuswheres[] = '(' . implode( ' OR ', $r_status ) . ')';
				}
			}
			if ( ! empty( $p_status ) ) {
				if ( ! empty( $q['perm'] ) && 'readable' === $q['perm'] && ! current_user_can( $read_private_cap ) ) {
					$statuswheres[] = "({$wpdb->posts}.post_author = $user_id " . 'AND (' . implode( ' OR ', $p_status ) . '))';
				} else {
					$statuswheres[] = '(' . implode( ' OR ', $p_status ) . ')';
				}
			}
			if ( $post_status_join ) {
				$join .= " LEFT JOIN {$wpdb->posts} AS p2 ON ({$wpdb->posts}.post_parent = p2.ID) ";
				foreach ( $statuswheres as $index => $statuswhere ) {
					$statuswheres[ $index ] = "($statuswhere OR ({$wpdb->posts}.post_status = 'inherit' AND " . str_replace( $wpdb->posts, 'p2', $statuswhere ) . '))';
				}
			}
			$where_status = implode( ' OR ', $statuswheres );
			if ( ! empty( $where_status ) ) {
				$where .= " AND ($where_status)";
			}
		} elseif ( ! $this->is_singular ) {
			if ( 'any' === $post_type ) {
				$queried_post_types = get_post_types( array( 'exclude_from_search' => false ) );
			} elseif ( is_array( $post_type ) ) {
				$queried_post_types = $post_type;
			} elseif ( ! empty( $post_type ) ) {
				$queried_post_types = array( $post_type );
			} else {
				$queried_post_types = array( 'post' );
			}

			if ( ! empty( $queried_post_types ) ) {

				$status_type_clauses = array();

				foreach ( $queried_post_types as $queried_post_type ) {

					$queried_post_type_object = get_post_type_object( $queried_post_type );

					$type_where = '(' . $wpdb->prepare( "{$wpdb->posts}.post_type = %s AND (", $queried_post_type );

					// Public statuses.
					$public_statuses = get_post_stati( array( 'public' => true ) );
					$status_clauses  = array();
					foreach ( $public_statuses as $public_status ) {
						$status_clauses[] = "{$wpdb->posts}.post_status = '$public_status'";
					}
					$type_where .= implode( ' OR ', $status_clauses );

					// Add protected states that should show in the admin all list.
					if ( $this->is_admin ) {
						$admin_all_statuses = get_post_stati(
							array(
								'protected'              => true,
								'show_in_admin_all_list' => true,
							)
						);
						foreach ( $admin_all_statuses as $admin_all_status ) {
							$type_where .= " OR {$wpdb->posts}.post_status = '$admin_all_status'";
						}
					}

					// Add private states that are visible to current user.
					if ( is_user_logged_in() && $queried_post_type_object instanceof WP_Post_Type ) {
						$read_private_cap = $queried_post_type_object->cap->read_private_posts;
						$private_statuses = get_post_stati( array( 'private' => true ) );
						foreach ( $private_statuses as $private_status ) {
							$type_where .= current_user_can( $read_private_cap ) ? " \nOR {$wpdb->posts}.post_status = '$private_status'" : " \nOR ({$wpdb->posts}.post_author = $user_id AND {$wpdb->posts}.post_status = '$private_status')";
						}
					}

					$type_where .= '))';

					$status_type_clauses[] = $type_where;
				}

				if ( ! empty( $status_type_clauses ) ) {
					$where .= ' AND (' . implode( ' OR ', $status_type_clauses ) . ')';
				}
			} else {
				$where .= ' AND 1=0 ';
			}
		} else {
			$where .= $post_type_where;
		}

		/*
		 * Apply filters on where and join prior to paging so that any
		 * manipulations to them are reflected in the paging by day queries.
		 */
		if ( ! $q['suppress_filters'] ) {
			/**
			 * Filters the WHERE clause of the query.
			 *
			 * @since 1.5.0
			 *
			 * @param string   $where The WHERE clause of the query.
			 * @param WP_Query $query The WP_Query instance (passed by reference).
			 */
			$where = apply_filters_ref_array( 'posts_where', array( $where, &$this ) );

			/**
			 * Filters the JOIN clause of the query.
			 *
			 * @since 1.5.0
			 *
			 * @param string   $join  The JOIN clause of the query.
			 * @param WP_Query $query The WP_Query instance (passed by reference).
			 */
			$join = apply_filters_ref_array( 'posts_join', array( $join, &$this ) );
		}

		// Paging.
		if ( empty( $q['nopaging'] ) && ! $this->is_singular ) {
			$page = absint( $q['paged'] );
			if ( ! $page ) {
				$page = 1;
			}

			// If 'offset' is provided, it takes precedence over 'paged'.
			if ( isset( $q['offset'] ) && is_numeric( $q['offset'] ) ) {
				$q['offset'] = absint( $q['offset'] );
				$pgstrt      = $q['offset'] . ', ';
			} else {
				$pgstrt = absint( ( $page - 1 ) * $q['posts_per_page'] ) . ', ';
			}
			$limits = 'LIMIT ' . $pgstrt . $q['posts_per_page'];
		}

		// Comments feeds.
		if ( $this->is_comment_feed && ! $this->is_singular ) {
			if ( $this->is_archive || $this->is_search ) {
				$cjoin    = "JOIN {$wpdb->posts} ON ( {$wpdb->comments}.comment_post_ID = {$wpdb->posts}.ID ) $join ";
				$cwhere   = "WHERE comment_approved = '1' $where";
				$cgroupby = "{$wpdb->comments}.comment_id";
			} else { // Other non-singular, e.g. front.
				$cjoin    = "JOIN {$wpdb->posts} ON ( {$wpdb->comments}.comment_post_ID = {$wpdb->posts}.ID )";
				$cwhere   = "WHERE ( post_status = 'publish' OR ( post_status = 'inherit' AND post_type = 'attachment' ) ) AND comment_approved = '1'";
				$cgroupby = '';
			}

			if ( ! $q['suppress_filters'] ) {
				/**
				 * Filters the JOIN clause of the comments feed query before sending.
				 *
				 * @since 2.2.0
				 *
				 * @param string   $cjoin The JOIN clause of the query.
				 * @param WP_Query $query The WP_Query instance (passed by reference).
				 */
				$cjoin = apply_filters_ref_array( 'comment_feed_join', array( $cjoin, &$this ) );

				/**
				 * Filters the WHERE clause of the comments feed query before sending.
				 *
				 * @since 2.2.0
				 *
				 * @param string   $cwhere The WHERE clause of the query.
				 * @param WP_Query $query  The WP_Query instance (passed by reference).
				 */
				$cwhere = apply_filters_ref_array( 'comment_feed_where', array( $cwhere, &$this ) );

				/**
				 * Filters the GROUP BY clause of the comments feed query before sending.
				 *
				 * @since 2.2.0
				 *
				 * @param string   $cgroupby The GROUP BY clause of the query.
				 * @param WP_Query $query    The WP_Query instance (passed by reference).
				 */
				$cgroupby = apply_filters_ref_array( 'comment_feed_groupby', array( $cgroupby, &$this ) );

				/**
				 * Filters the ORDER BY clause of the comments feed query before sending.
				 *
				 * @since 2.8.0
				 *
				 * @param string   $corderby The ORDER BY clause of the query.
				 * @param WP_Query $query    The WP_Query instance (passed by reference).
				 */
				$corderby = apply_filters_ref_array( 'comment_feed_orderby', array( 'comment_date_gmt DESC', &$this ) );

				/**
				 * Filters the LIMIT clause of the comments feed query before sending.
				 *
				 * @since 2.8.0
				 *
				 * @param string   $climits The JOIN clause of the query.
				 * @param WP_Query $query   The WP_Query instance (passed by reference).
				 */
				$climits = apply_filters_ref_array( 'comment_feed_limits', array( 'LIMIT ' . get_option( 'posts_per_rss' ), &$this ) );
			}

			$cgroupby = ( ! empty( $cgroupby ) ) ? 'GROUP BY ' . $cgroupby : '';
			$corderby = ( ! empty( $corderby ) ) ? 'ORDER BY ' . $corderby : '';
			$climits  = ( ! empty( $climits ) ) ? $climits : '';

			$comments = (array) $wpdb->get_results( "SELECT $distinct {$wpdb->comments}.* FROM {$wpdb->comments} $cjoin $cwhere $cgroupby $corderby $climits" );
			// Convert to WP_Comment.
			/** @var WP_Comment[] */
			$this->comments      = array_map( 'get_comment', $comments );
			$this->comment_count = count( $this->comments );

			$post_ids = array();

			foreach ( $this->comments as $comment ) {
				$post_ids[] = (int) $comment->comment_post_ID;
			}

			$post_ids = implode( ',', $post_ids );
			$join     = '';
			if ( $post_ids ) {
				$where = "AND {$wpdb->posts}.ID IN ($post_ids) ";
			} else {
				$where = 'AND 0';
			}
		}

		$pieces = array( 'where', 'groupby', 'join', 'orderby', 'distinct', 'fields', 'limits' );

		/*
		 * Apply post-paging filters on where and join. Only plugins that
		 * manipulate paging queries should use these hooks.
		 */
		if ( ! $q['suppress_filters'] ) {
			/**
			 * Filters the WHERE clause of the query.
			 *
			 * Specifically for manipulating paging queries.
			 *
			 * @since 1.5.0
			 *
			 * @param string   $where The WHERE clause of the query.
			 * @param WP_Query $query The WP_Query instance (passed by reference).
			 */
			$where = apply_filters_ref_array( 'posts_where_paged', array( $where, &$this ) );

			/**
			 * Filters the GROUP BY clause of the query.
			 *
			 * @since 2.0.0
			 *
			 * @param string   $groupby The GROUP BY clause of the query.
			 * @param WP_Query $query   The WP_Query instance (passed by reference).
			 */
			$groupby = apply_filters_ref_array( 'posts_groupby', array( $groupby, &$this ) );

			/**
			 * Filters the JOIN clause of the query.
			 *
			 * Specifically for manipulating paging queries.
			 *
			 * @since 1.5.0
			 *
			 * @param string   $join  The JOIN clause of the query.
			 * @param WP_Query $query The WP_Query instance (passed by reference).
			 */
			$join = apply_filters_ref_array( 'posts_join_paged', array( $join, &$this ) );

			/**
			 * Filters the ORDER BY clause of the query.
			 *
			 * @since 1.5.1
			 *
			 * @param string   $orderby The ORDER BY clause of the query.
			 * @param WP_Query $query   The WP_Query instance (passed by reference).
			 */
			$orderby = apply_filters_ref_array( 'posts_orderby', array( $orderby, &$this ) );

			/**
			 * Filters the DISTINCT clause of the query.
			 *
			 * @since 2.1.0
			 *
			 * @param string   $distinct The DISTINCT clause of the query.
			 * @param WP_Query $query    The WP_Query instance (passed by reference).
			 */
			$distinct = apply_filters_ref_array( 'posts_distinct', array( $distinct, &$this ) );

			/**
			 * Filters the LIMIT clause of the query.
			 *
			 * @since 2.1.0
			 *
			 * @param string   $limits The LIMIT clause of the query.
			 * @param WP_Query $query  The WP_Query instance (passed by reference).
			 */
			$limits = apply_filters_ref_array( 'post_limits', array( $limits, &$this ) );

			/**
			 * Filters the SELECT clause of the query.
			 *
			 * @since 2.1.0
			 *
			 * @param string   $fields The SELECT clause of the query.
			 * @param WP_Query $query  The WP_Query instance (passed by reference).
			 */
			$fields = apply_filters_ref_array( 'posts_fields', array( $fields, &$this ) );

			/**
			 * Filters all query clauses at once, for convenience.
			 *
			 * Covers the WHERE, GROUP BY, JOIN, ORDER BY, DISTINCT,
			 * fields (SELECT), and LIMIT clauses.
			 *
			 * @since 3.1.0
			 *
			 * @param string[] $clauses {
			 *     Associative array of the clauses for the query.
			 *
			 *     @type string $where    The WHERE clause of the query.
			 *     @type string $groupby  The GROUP BY clause of the query.
			 *     @type string $join     The JOIN clause of the query.
			 *     @type string $orderby  The ORDER BY clause of the query.
			 *     @type string $distinct The DISTINCT clause of the query.
			 *     @type string $fields   The SELECT clause of the query.
			 *     @type string $limits   The LIMIT clause of the query.
			 * }
			 * @param WP_Query $query   The WP_Query instance (passed by reference).
			 */
			$clauses = (array) apply_filters_ref_array( 'posts_clauses', array( compact( $pieces ), &$this ) );

			$where    = isset( $clauses['where'] ) ? $clauses['where'] : '';
			$groupby  = isset( $clauses['groupby'] ) ? $clauses['groupby'] : '';
			$join     = isset( $clauses['join'] ) ? $clauses['join'] : '';
			$orderby  = isset( $clauses['orderby'] ) ? $clauses['orderby'] : '';
			$distinct = isset( $clauses['distinct'] ) ? $clauses['distinct'] : '';
			$fields   = isset( $clauses['fields'] ) ? $clauses['fields'] : '';
			$limits   = isset( $clauses['limits'] ) ? $clauses['limits'] : '';
		}

		/**
		 * Fires to announce the query's current selection parameters.
		 *
		 * For use by caching plugins.
		 *
		 * @since 2.3.0
		 *
		 * @param string $selection The assembled selection query.
		 */
		do_action( 'posts_selection', $where . $groupby . $orderby . $limits . $join );

		/*
		 * Filters again for the benefit of caching plugins.
		 * Regular plugins should use the hooks above.
		 */
		if ( ! $q['suppress_filters'] ) {
			/**
			 * Filters the WHERE clause of the query.
			 *
			 * For use by caching plugins.
			 *
			 * @since 2.5.0
			 *
			 * @param string   $where The WHERE clause of the query.
			 * @param WP_Query $query The WP_Query instance (passed by reference).
			 */
			$where = apply_filters_ref_array( 'posts_where_request', array( $where, &$this ) );

			/**
			 * Filters the GROUP BY clause of the query.
			 *
			 * For use by caching plugins.
			 *
			 * @since 2.5.0
			 *
			 * @param string   $groupby The GROUP BY clause of the query.
			 * @param WP_Query $query   The WP_Query instance (passed by reference).
			 */
			$groupby = apply_filters_ref_array( 'posts_groupby_request', array( $groupby, &$this ) );

			/**
			 * Filters the JOIN clause of the query.
			 *
			 * For use by caching plugins.
			 *
			 * @since 2.5.0
			 *
			 * @param string   $join  The JOIN clause of the query.
			 * @param WP_Query $query The WP_Query instance (passed by reference).
			 */
			$join = apply_filters_ref_array( 'posts_join_request', array( $join, &$this ) );

			/**
			 * Filters the ORDER BY clause of the query.
			 *
			 * For use by caching plugins.
			 *
			 * @since 2.5.0
			 *
			 * @param string   $orderby The ORDER BY clause of the query.
			 * @param WP_Query $query   The WP_Query instance (passed by reference).
			 */
			$orderby = apply_filters_ref_array( 'posts_orderby_request', array( $orderby, &$this ) );

			/**
			 * Filters the DISTINCT clause of the query.
			 *
			 * For use by caching plugins.
			 *
			 * @since 2.5.0
			 *
			 * @param string   $distinct The DISTINCT clause of the query.
			 * @param WP_Query $query    The WP_Query instance (passed by reference).
			 */
			$distinct = apply_filters_ref_array( 'posts_distinct_request', array( $distinct, &$this ) );

			/**
			 * Filters the SELECT clause of the query.
			 *
			 * For use by caching plugins.
			 *
			 * @since 2.5.0
			 *
			 * @param string   $fields The SELECT clause of the query.
			 * @param WP_Query $query  The WP_Query instance (passed by reference).
			 */
			$fields = apply_filters_ref_array( 'posts_fields_request', array( $fields, &$this ) );

			/**
			 * Filters the LIMIT clause of the query.
			 *
			 * For use by caching plugins.
			 *
			 * @since 2.5.0
			 *
			 * @param string   $limits The LIMIT clause of the query.
			 * @param WP_Query $query  The WP_Query instance (passed by reference).
			 */
			$limits = apply_filters_ref_array( 'post_limits_request', array( $limits, &$this ) );

			/**
			 * Filters all query clauses at once, for convenience.
			 *
			 * For use by caching plugins.
			 *
			 * Covers the WHERE, GROUP BY, JOIN, ORDER BY, DISTINCT,
			 * fields (SELECT), and LIMIT clauses.
			 *
			 * @since 3.1.0
			 *
			 * @param string[] $pieces {
			 *     Associative array of the clauses for the query.
			 *
			 *     @type string $where    The WHERE clause of the query.
			 *     @type string $groupby  The GROUP BY clause of the query.
			 *     @type string $join     The JOIN clause of the query.
			 *     @type string $orderby  The ORDER BY clause of the query.
			 *     @type string $distinct The DISTINCT clause of the query.
			 *     @type string $fields   The SELECT clause of the query.
			 *     @type string $limits   The LIMIT clause of the query.
			 * }
			 * @param WP_Query $query  The WP_Query instance (passed by reference).
			 */
			$clauses = (array) apply_filters_ref_array( 'posts_clauses_request', array( compact( $pieces ), &$this ) );

			$where    = isset( $clauses['where'] ) ? $clauses['where'] : '';
			$groupby  = isset( $clauses['groupby'] ) ? $clauses['groupby'] : '';
			$join     = isset( $clauses['join'] ) ? $clauses['join'] : '';
			$orderby  = isset( $clauses['orderby'] ) ? $clauses['orderby'] : '';
			$distinct = isset( $clauses['distinct'] ) ? $clauses['distinct'] : '';
			$fields   = isset( $clauses['fields'] ) ? $clauses['fields'] : '';
			$limits   = isset( $clauses['limits'] ) ? $clauses['limits'] : '';
		}

		if ( ! empty( $groupby ) ) {
			$groupby = 'GROUP BY ' . $groupby;
		}
		if ( ! empty( $orderby ) ) {
			$orderby = 'ORDER BY ' . $orderby;
		}

		$found_rows = '';
		if ( ! $q['no_found_rows'] && ! empty( $limits ) ) {
			$found_rows = 'SQL_CALC_FOUND_ROWS';
		}

		$old_request   = "SELECT $found_rows $distinct $fields FROM {$wpdb->posts} $join WHERE 1=1 $where $groupby $orderby $limits";
		$this->request = $old_request;

		if ( ! $q['suppress_filters'] ) {
			/**
			 * Filters the completed SQL query before sending.
			 *
			 * @since 2.0.0
			 *
			 * @param string   $request The complete SQL query.
			 * @param WP_Query $query   The WP_Query instance (passed by reference).
			 */
			$this->request = apply_filters_ref_array( 'posts_request', array( $this->request, &$this ) );
		}

		/**
		 * Filters the posts array before the query takes place.
		 *
		 * Return a non-null value to bypass WordPress' default post queries.
		 *
		 * Filtering functions that require pagination information are encouraged to set
		 * the `found_posts` and `max_num_pages` properties of the WP_Query object,
		 * passed to the filter by reference. If WP_Query does not perform a database
		 * query, it will not have enough information to generate these values itself.
		 *
		 * @since 4.6.0
		 *
		 * @param WP_Post[]|int[]|null $posts Return an array of post data to short-circuit WP's query,
		 *                                    or null to allow WP to run its normal queries.
		 * @param WP_Query             $query The WP_Query instance (passed by reference).
		 */
		$this->posts = apply_filters_ref_array( 'posts_pre_query', array( null, &$this ) );

		if ( 'ids' === $q['fields'] ) {
			if ( null === $this->posts ) {
				$this->posts = $wpdb->get_col( $this->request );
			}

			/** @var int[] */
			$this->posts      = array_map( 'intval', $this->posts );
			$this->post_count = count( $this->posts );
			$this->set_found_posts( $q, $limits );

			return $this->posts;
		}

		if ( 'id=>parent' === $q['fields'] ) {
			if ( null === $this->posts ) {
				$this->posts = $wpdb->get_results( $this->request );
			}

			$this->post_count = count( $this->posts );
			$this->set_found_posts( $q, $limits );

			/** @var int[] */
			$r = array();
			foreach ( $this->posts as $key => $post ) {
				$this->posts[ $key ]->ID          = (int) $post->ID;
				$this->posts[ $key ]->post_parent = (int) $post->post_parent;

				$r[ (int) $post->ID ] = (int) $post->post_parent;
			}

			return $r;
		}

		if ( null === $this->posts ) {
			$split_the_query = ( $old_request == $this->request && "{$wpdb->posts}.*" === $fields && ! empty( $limits ) && $q['posts_per_page'] < 500 );

			/**
			 * Filters whether to split the query.
			 *
			 * Splitting the query will cause it to fetch just the IDs of the found posts
			 * (and then individually fetch each post by ID), rather than fetching every
			 * complete row at once. One massive result vs. many small results.
			 *
			 * @since 3.4.0
			 *
			 * @param bool     $split_the_query Whether or not to split the query.
			 * @param WP_Query $query           The WP_Query instance.
			 */
			$split_the_query = apply_filters( 'split_the_query', $split_the_query, $this );

			if ( $split_the_query ) {
				// First get the IDs and then fill in the objects.

				$this->request = "SELECT $found_rows $distinct {$wpdb->posts}.ID FROM {$wpdb->posts} $join WHERE 1=1 $where $groupby $orderby $limits";

				/**
				 * Filters the Post IDs SQL request before sending.
				 *
				 * @since 3.4.0
				 *
				 * @param string   $request The post ID request.
				 * @param WP_Query $query   The WP_Query instance.
				 */
				$this->request = apply_filters( 'posts_request_ids', $this->request, $this );

				$ids = $wpdb->get_col( $this->request );

				if ( $ids ) {
					$this->posts = $ids;
					$this->set_found_posts( $q, $limits );
					_prime_post_caches( $ids, $q['update_post_term_cache'], $q['update_post_meta_cache'] );
				} else {
					$this->posts = array();
				}
			} else {
				$this->posts = $wpdb->get_results( $this->request );
				$this->set_found_posts( $q, $limits );
			}
		}

		// Convert to WP_Post objects.
		if ( $this->posts ) {
			/** @var WP_Post[] */
			$this->posts = array_map( 'get_post', $this->posts );
		}

		if ( ! $q['suppress_filters'] ) {
			/**
			 * Filters the raw post results array, prior to status checks.
			 *
			 * @since 2.3.0
			 *
			 * @param WP_Post[] $posts Array of post objects.
			 * @param WP_Query  $query The WP_Query instance (passed by reference).
			 */
			$this->posts = apply_filters_ref_array( 'posts_results', array( $this->posts, &$this ) );
		}

		if ( ! empty( $this->posts ) && $this->is_comment_feed && $this->is_singular ) {
			/** This filter is documented in wp-includes/query.php */
			$cjoin = apply_filters_ref_array( 'comment_feed_join', array( '', &$this ) );

			/** This filter is documented in wp-includes/query.php */
			$cwhere = apply_filters_ref_array( 'comment_feed_where', array( "WHERE comment_post_ID = '{$this->posts[0]->ID}' AND comment_approved = '1'", &$this ) );

			/** This filter is documented in wp-includes/query.php */
			$cgroupby = apply_filters_ref_array( 'comment_feed_groupby', array( '', &$this ) );
			$cgroupby = ( ! empty( $cgroupby ) ) ? 'GROUP BY ' . $cgroupby : '';

			/** This filter is documented in wp-includes/query.php */
			$corderby = apply_filters_ref_array( 'comment_feed_orderby', array( 'comment_date_gmt DESC', &$this ) );
			$corderby = ( ! empty( $corderby ) ) ? 'ORDER BY ' . $corderby : '';

			/** This filter is documented in wp-includes/query.php */
			$climits = apply_filters_ref_array( 'comment_feed_limits', array( 'LIMIT ' . get_option( 'posts_per_rss' ), &$this ) );

			$comments_request = "SELECT {$wpdb->comments}.* FROM {$wpdb->comments} $cjoin $cwhere $cgroupby $corderby $climits";
			$comments         = $wpdb->get_results( $comments_request );
			// Convert to WP_Comment.
			/** @var WP_Comment[] */
			$this->comments      = array_map( 'get_comment', $comments );
			$this->comment_count = count( $this->comments );
		}

		// Check post status to determine if post should be displayed.
		if ( ! empty( $this->posts ) && ( $this->is_single || $this->is_page ) ) {
			$status = get_post_status( $this->posts[0] );

			if ( 'attachment' === $this->posts[0]->post_type && 0 === (int) $this->posts[0]->post_parent ) {
				$this->is_page       = false;
				$this->is_single     = true;
				$this->is_attachment = true;
			}

			// If the post_status was specifically requested, let it pass through.
			if ( ! in_array( $status, $q_status, true ) ) {
				$post_status_obj = get_post_status_object( $status );

				if ( $post_status_obj && ! $post_status_obj->public ) {
					if ( ! is_user_logged_in() ) {
						// User must be logged in to view unpublished posts.
						$this->posts = array();
					} else {
						if ( $post_status_obj->protected ) {
							// User must have edit permissions on the draft to preview.
							if ( ! current_user_can( $edit_cap, $this->posts[0]->ID ) ) {
								$this->posts = array();
							} else {
								$this->is_preview = true;
								if ( 'future' !== $status ) {
									$this->posts[0]->post_date = current_time( 'mysql' );
								}
							}
						} elseif ( $post_status_obj->private ) {
							if ( ! current_user_can( $read_cap, $this->posts[0]->ID ) ) {
								$this->posts = array();
							}
						} else {
							$this->posts = array();
						}
					}
				} elseif ( ! $post_status_obj ) {
					// Post status is not registered, assume it's not public.
					if ( ! current_user_can( $edit_cap, $this->posts[0]->ID ) ) {
						$this->posts = array();
					}
				}
			}

			if ( $this->is_preview && $this->posts && current_user_can( $edit_cap, $this->posts[0]->ID ) ) {
				/**
				 * Filters the single post for preview mode.
				 *
				 * @since 2.7.0
				 *
				 * @param WP_Post  $post_preview  The Post object.
				 * @param WP_Query $query         The WP_Query instance (passed by reference).
				 */
				$this->posts[0] = get_post( apply_filters_ref_array( 'the_preview', array( $this->posts[0], &$this ) ) );
			}
		}

		// Put sticky posts at the top of the posts array.
		$sticky_posts = get_option( 'sticky_posts' );
		if ( $this->is_home && $page <= 1 && is_array( $sticky_posts ) && ! empty( $sticky_posts ) && ! $q['ignore_sticky_posts'] ) {
			$num_posts     = count( $this->posts );
			$sticky_offset = 0;
			// Loop over posts and relocate stickies to the front.
			for ( $i = 0; $i < $num_posts; $i++ ) {
				if ( in_array( $this->posts[ $i ]->ID, $sticky_posts, true ) ) {
					$sticky_post = $this->posts[ $i ];
					// Remove sticky from current position.
					array_splice( $this->posts, $i, 1 );
					// Move to front, after other stickies.
					array_splice( $this->posts, $sticky_offset, 0, array( $sticky_post ) );
					// Increment the sticky offset. The next sticky will be placed at this offset.
					$sticky_offset++;
					// Remove post from sticky posts array.
					$offset = array_search( $sticky_post->ID, $sticky_posts, true );
					unset( $sticky_posts[ $offset ] );
				}
			}

			// If any posts have been excluded specifically, Ignore those that are sticky.
			if ( ! empty( $sticky_posts ) && ! empty( $q['post__not_in'] ) ) {
				$sticky_posts = array_diff( $sticky_posts, $q['post__not_in'] );
			}

			// Fetch sticky posts that weren't in the query results.
			if ( ! empty( $sticky_posts ) ) {
				$stickies = get_posts(
					array(
						'post__in'    => $sticky_posts,
						'post_type'   => $post_type,
						'post_status' => 'publish',
						'nopaging'    => true,
					)
				);

				foreach ( $stickies as $sticky_post ) {
					array_splice( $this->posts, $sticky_offset, 0, array( $sticky_post ) );
					$sticky_offset++;
				}
			}
		}

		// If comments have been fetched as part of the query, make sure comment meta lazy-loading is set up.
		if ( ! empty( $this->comments ) ) {
			wp_queue_comments_for_comment_meta_lazyload( $this->comments );
		}

		if ( ! $q['suppress_filters'] ) {
			/**
			 * Filters the array of retrieved posts after they've been fetched and
			 * internally processed.
			 *
			 * @since 1.5.0
			 *
			 * @param WP_Post[] $posts Array of post objects.
			 * @param WP_Query  $query The WP_Query instance (passed by reference).
			 */
			$this->posts = apply_filters_ref_array( 'the_posts', array( $this->posts, &$this ) );
		}

		// Ensure that any posts added/modified via one of the filters above are
		// of the type WP_Post and are filtered.
		if ( $this->posts ) {
			$this->post_count = count( $this->posts );

			/** @var WP_Post[] */
			$this->posts = array_map( 'get_post', $this->posts );

			if ( $q['cache_results'] ) {
				update_post_caches( $this->posts, $post_type, $q['update_post_term_cache'], $q['update_post_meta_cache'] );
			}

			/** @var WP_Post */
			$this->post = reset( $this->posts );
		} else {
			$this->post_count = 0;
			$this->posts      = array();
		}

		if ( $q['lazy_load_term_meta'] ) {
			wp_queue_posts_for_term_meta_lazyload( $this->posts );
		}

		return $this->posts;
	}

	/**
	 * Set up the amount of found posts and the number of pages (if limit clause was used)
	 * for the current query.
	 *
	 * @since 3.5.0
	 *
	 * @global wpdb $wpdb WordPress database abstraction object.
	 *
	 * @param array  $q      Query variables.
	 * @param string $limits LIMIT clauses of the query.
	 */
	private function set_found_posts( $q, $limits ) {
		global $wpdb;

		// Bail if posts is an empty array. Continue if posts is an empty string,
		// null, or false to accommodate caching plugins that fill posts later.
		if ( $q['no_found_rows'] || ( is_array( $this->posts ) && ! $this->posts ) ) {
			return;
		}

		if ( ! empty( $limits ) ) {
			/**
			 * Filters the query to run for retrieving the found posts.
			 *
			 * @since 2.1.0
			 *
			 * @param string   $found_posts_query The query to run to find the found posts.
			 * @param WP_Query $query             The WP_Query instance (passed by reference).
			 */
			$found_posts_query = apply_filters_ref_array( 'found_posts_query', array( 'SELECT FOUND_ROWS()', &$this ) );

			$this->found_posts = (int) $wpdb->get_var( $found_posts_query );
		} else {
			if ( is_array( $this->posts ) ) {
				$this->found_posts = count( $this->posts );
			} else {
				if ( null === $this->posts ) {
					$this->found_posts = 0;
				} else {
					$this->found_posts = 1;
				}
			}
		}

		/**
		 * Filters the number of found posts for the query.
		 *
		 * @since 2.1.0
		 *
		 * @param int      $found_posts The number of posts found.
		 * @param WP_Query $query       The WP_Query instance (passed by reference).
		 */
		$this->found_posts = (int) apply_filters_ref_array( 'found_posts', array( $this->found_posts, &$this ) );

		if ( ! empty( $limits ) ) {
			$this->max_num_pages = ceil( $this->found_posts / $q['posts_per_page'] );
		}
	}

	/**
	 * Set up the next post and iterate current post index.
	 *
	 * @since 1.5.0
	 *
	 * @return WP_Post Next post.
	 */
	public function next_post() {

		$this->current_post++;

		/** @var WP_Post */
		$this->post = $this->posts[ $this->current_post ];
		return $this->post;
	}

	/**
	 * Sets up the current post.
	 *
	 * Retrieves the next post, sets up the post, sets the 'in the loop'
	 * property to true.
	 *
	 * @since 1.5.0
	 *
	 * @global WP_Post $post Global post object.
	 */
	public function the_post() {
		global $post;
		$this->in_the_loop = true;

		if ( -1 == $this->current_post ) { // Loop has just started.
			/**
			 * Fires once the loop is started.
			 *
			 * @since 2.0.0
			 *
			 * @param WP_Query $query The WP_Query instance (passed by reference).
			 */
			do_action_ref_array( 'loop_start', array( &$this ) );
		}

		$post = $this->next_post();
		$this->setup_postdata( $post );
	}

	/**
	 * Determines whether there are more posts available in the loop.
	 *
	 * Calls the {@see 'loop_end'} action when the loop is complete.
	 *
	 * @since 1.5.0
	 *
	 * @return bool True if posts are available, false if end of the loop.
	 */
	public function have_posts() {
		if ( $this->current_post + 1 < $this->post_count ) {
			return true;
		} elseif ( $this->current_post + 1 == $this->post_count && $this->post_count > 0 ) {
			/**
			 * Fires once the loop has ended.
			 *
			 * @since 2.0.0
			 *
			 * @param WP_Query $query The WP_Query instance (passed by reference).
			 */
			do_action_ref_array( 'loop_end', array( &$this ) );
			// Do some cleaning up after the loop.
			$this->rewind_posts();
		} elseif ( 0 === $this->post_count ) {
			/**
			 * Fires if no results are found in a post query.
			 *
			 * @since 4.9.0
			 *
			 * @param WP_Query $query The WP_Query instance.
			 */
			do_action( 'loop_no_results', $this );
		}

		$this->in_the_loop = false;
		return false;
	}

	/**
	 * Rewind the posts and reset post index.
	 *
	 * @since 1.5.0
	 */
	public function rewind_posts() {
		$this->current_post = -1;
		if ( $this->post_count > 0 ) {
			$this->post = $this->posts[0];
		}
	}

	/**
	 * Iterate current comment index and return WP_Comment object.
	 *
	 * @since 2.2.0
	 *
	 * @return WP_Comment Comment object.
	 */
	public function next_comment() {
		$this->current_comment++;

		/** @var WP_Comment */
		$this->comment = $this->comments[ $this->current_comment ];
		return $this->comment;
	}

	/**
	 * Sets up the current comment.
	 *
	 * @since 2.2.0
	 *
	 * @global WP_Comment $comment Global comment object.
	 */
	public function the_comment() {
		global $comment;

		$comment = $this->next_comment();

		if ( 0 == $this->current_comment ) {
			/**
			 * Fires once the comment loop is started.
			 *
			 * @since 2.2.0
			 */
			do_action( 'comment_loop_start' );
		}
	}

	/**
	 * Whether there are more comments available.
	 *
	 * Automatically rewinds comments when finished.
	 *
	 * @since 2.2.0
	 *
	 * @return bool True if comments are available, false if no more comments.
	 */
	public function have_comments() {
		if ( $this->current_comment + 1 < $this->comment_count ) {
			return true;
		} elseif ( $this->current_comment + 1 == $this->comment_count ) {
			$this->rewind_comments();
		}

		return false;
	}

	/**
	 * Rewind the comments, resets the comment index and comment to first.
	 *
	 * @since 2.2.0
	 */
	public function rewind_comments() {
		$this->current_comment = -1;
		if ( $this->comment_count > 0 ) {
			$this->comment = $this->comments[0];
		}
	}

	/**
	 * Sets up the WordPress query by parsing query string.
	 *
	 * @since 1.5.0
	 *
	 * @see WP_Query::parse_query() for all available arguments.
	 *
	 * @param string|array $query URL query string or array of query arguments.
	 * @return WP_Post[]|int[] Array of post objects or post IDs.
	 */
	public function query( $query ) {
		$this->init();
		$this->query      = wp_parse_args( $query );
		$this->query_vars = $this->query;
		return $this->get_posts();
	}

	/**
	 * Retrieves the currently queried object.
	 *
	 * If queried object is not set, then the queried object will be set from
	 * the category, tag, taxonomy, posts page, single post, page, or author
	 * query variable. After it is set up, it will be returned.
	 *
	 * @since 1.5.0
	 *
	 * @return WP_Term|WP_Post_Type|WP_Post|WP_User|null The queried object.
	 */
	public function get_queried_object() {
		if ( isset( $this->queried_object ) ) {
			return $this->queried_object;
		}

		$this->queried_object    = null;
		$this->queried_object_id = null;

		if ( $this->is_category || $this->is_tag || $this->is_tax ) {
			if ( $this->is_category ) {
				if ( $this->get( 'cat' ) ) {
					$term = get_term( $this->get( 'cat' ), 'category' );
				} elseif ( $this->get( 'category_name' ) ) {
					$term = get_term_by( 'slug', $this->get( 'category_name' ), 'category' );
				}
			} elseif ( $this->is_tag ) {
				if ( $this->get( 'tag_id' ) ) {
					$term = get_term( $this->get( 'tag_id' ), 'post_tag' );
				} elseif ( $this->get( 'tag' ) ) {
					$term = get_term_by( 'slug', $this->get( 'tag' ), 'post_tag' );
				}
			} else {
				// For other tax queries, grab the first term from the first clause.
				if ( ! empty( $this->tax_query->queried_terms ) ) {
					$queried_taxonomies = array_keys( $this->tax_query->queried_terms );
					$matched_taxonomy   = reset( $queried_taxonomies );
					$query              = $this->tax_query->queried_terms[ $matched_taxonomy ];

					if ( ! empty( $query['terms'] ) ) {
						if ( 'term_id' === $query['field'] ) {
							$term = get_term( reset( $query['terms'] ), $matched_taxonomy );
						} else {
							$term = get_term_by( $query['field'], reset( $query['terms'] ), $matched_taxonomy );
						}
					}
				}
			}

			if ( ! empty( $term ) && ! is_wp_error( $term ) ) {
				$this->queried_object    = $term;
				$this->queried_object_id = (int) $term->term_id;

				if ( $this->is_category && 'category' === $this->queried_object->taxonomy ) {
					_make_cat_compat( $this->queried_object );
				}
			}
		} elseif ( $this->is_post_type_archive ) {
			$post_type = $this->get( 'post_type' );
			if ( is_array( $post_type ) ) {
				$post_type = reset( $post_type );
			}
			$this->queried_object = get_post_type_object( $post_type );
		} elseif ( $this->is_posts_page ) {
			$page_for_posts          = get_option( 'page_for_posts' );
			$this->queried_object    = get_post( $page_for_posts );
			$this->queried_object_id = (int) $this->queried_object->ID;
		} elseif ( $this->is_singular && ! empty( $this->post ) ) {
			$this->queried_object    = $this->post;
			$this->queried_object_id = (int) $this->post->ID;
		} elseif ( $this->is_author ) {
			$this->queried_object_id = (int) $this->get( 'author' );
			$this->queried_object    = get_userdata( $this->queried_object_id );
		}

		return $this->queried_object;
	}

	/**
	 * Retrieves the ID of the currently queried object.
	 *
	 * @since 1.5.0
	 *
	 * @return int
	 */
	public function get_queried_object_id() {
		$this->get_queried_object();

		if ( isset( $this->queried_object_id ) ) {
			return $this->queried_object_id;
		}

		return 0;
	}

	/**
	 * Constructor.
	 *
	 * Sets up the WordPress query, if parameter is not empty.
	 *
	 * @since 1.5.0
	 *
	 * @see WP_Query::parse_query() for all available arguments.
	 *
	 * @param string|array $query URL query string or array of vars.
	 */
	public function __construct( $query = '' ) {
		if ( ! empty( $query ) ) {
			$this->query( $query );
		}
	}

	/**
	 * Make private properties readable for backward compatibility.
	 *
	 * @since 4.0.0
	 *
	 * @param string $name Property to get.
	 * @return mixed Property.
	 */
	public function __get( $name ) {
		if ( in_array( $name, $this->compat_fields, true ) ) {
			return $this->$name;
		}
	}

	/**
	 * Make private properties checkable for backward compatibility.
	 *
	 * @since 4.0.0
	 *
	 * @param string $name Property to check if set.
	 * @return bool Whether the property is set.
	 */
	public function __isset( $name ) {
		if ( in_array( $name, $this->compat_fields, true ) ) {
			return isset( $this->$name );
		}
	}

	/**
	 * Make private/protected methods readable for backward compatibility.
	 *
	 * @since 4.0.0
	 *
	 * @param string $name      Method to call.
	 * @param array  $arguments Arguments to pass when calling.
	 * @return mixed|false Return value of the callback, false otherwise.
	 */
	public function __call( $name, $arguments ) {
		if ( in_array( $name, $this->compat_methods, true ) ) {
			return $this->$name( ...$arguments );
		}
		return false;
	}

	/**
	 * Is the query for an existing archive page?
	 *
	 * Archive pages include category, tag, author, date, custom post type,
	 * and custom taxonomy based archives.
	 *
	 * @since 3.1.0
	 *
	 * @see WP_Query::is_category()
	 * @see WP_Query::is_tag()
	 * @see WP_Query::is_author()
	 * @see WP_Query::is_date()
	 * @see WP_Query::is_post_type_archive()
	 * @see WP_Query::is_tax()
	 *
	 * @return bool Whether the query is for an existing archive page.
	 */
	public function is_archive() {
		return (bool) $this->is_archive;
	}

	/**
	 * Is the query for an existing post type archive page?
	 *
	 * @since 3.1.0
	 *
	 * @param string|string[] $post_types Optional. Post type or array of posts types
	 *                                    to check against. Default empty.
	 * @return bool Whether the query is for an existing post type archive page.
	 */
	public function is_post_type_archive( $post_types = '' ) {
		if ( empty( $post_types ) || ! $this->is_post_type_archive ) {
			return (bool) $this->is_post_type_archive;
		}

		$post_type = $this->get( 'post_type' );
		if ( is_array( $post_type ) ) {
			$post_type = reset( $post_type );
		}
		$post_type_object = get_post_type_object( $post_type );

		return in_array( $post_type_object->name, (array) $post_types, true );
	}

	/**
	 * Is the query for an existing attachment page?
	 *
	 * @since 3.1.0
	 *
	 * @param int|string|int[]|string[] $attachment Optional. Attachment ID, title, slug, or array of such
	 *                                              to check against. Default empty.
	 * @return bool Whether the query is for an existing attachment page.
	 */
	public function is_attachment( $attachment = '' ) {
		if ( ! $this->is_attachment ) {
			return false;
		}

		if ( empty( $attachment ) ) {
			return true;
		}

		$attachment = array_map( 'strval', (array) $attachment );

		$post_obj = $this->get_queried_object();

		if ( in_array( (string) $post_obj->ID, $attachment, true ) ) {
			return true;
		} elseif ( in_array( $post_obj->post_title, $attachment, true ) ) {
			return true;
		} elseif ( in_array( $post_obj->post_name, $attachment, true ) ) {
			return true;
		}
		return false;
	}

	/**
	 * Is the query for an existing author archive page?
	 *
	 * If the $author parameter is specified, this function will additionally
	 * check if the query is for one of the authors specified.
	 *
	 * @since 3.1.0
	 *
	 * @param int|string|int[]|string[] $author Optional. User ID, nickname, nicename, or array of such
	 *                                          to check against. Default empty.
	 * @return bool Whether the query is for an existing author archive page.
	 */
	public function is_author( $author = '' ) {
		if ( ! $this->is_author ) {
			return false;
		}

		if ( empty( $author ) ) {
			return true;
		}

		$author_obj = $this->get_queried_object();

		$author = array_map( 'strval', (array) $author );

		if ( in_array( (string) $author_obj->ID, $author, true ) ) {
			return true;
		} elseif ( in_array( $author_obj->nickname, $author, true ) ) {
			return true;
		} elseif ( in_array( $author_obj->user_nicename, $author, true ) ) {
			return true;
		}

		return false;
	}

	/**
	 * Is the query for an existing category archive page?
	 *
	 * If the $category parameter is specified, this function will additionally
	 * check if the query is for one of the categories specified.
	 *
	 * @since 3.1.0
	 *
	 * @param int|string|int[]|string[] $category Optional. Category ID, name, slug, or array of such
	 *                                            to check against. Default empty.
	 * @return bool Whether the query is for an existing category archive page.
	 */
	public function is_category( $category = '' ) {
		if ( ! $this->is_category ) {
			return false;
		}

		if ( empty( $category ) ) {
			return true;
		}

		$cat_obj = $this->get_queried_object();

		$category = array_map( 'strval', (array) $category );

		if ( in_array( (string) $cat_obj->term_id, $category, true ) ) {
			return true;
		} elseif ( in_array( $cat_obj->name, $category, true ) ) {
			return true;
		} elseif ( in_array( $cat_obj->slug, $category, true ) ) {
			return true;
		}

		return false;
	}

	/**
	 * Is the query for an existing tag archive page?
	 *
	 * If the $tag parameter is specified, this function will additionally
	 * check if the query is for one of the tags specified.
	 *
	 * @since 3.1.0
	 *
	 * @param int|string|int[]|string[] $tag Optional. Tag ID, name, slug, or array of such
	 *                                       to check against. Default empty.
	 * @return bool Whether the query is for an existing tag archive page.
	 */
	public function is_tag( $tag = '' ) {
		if ( ! $this->is_tag ) {
			return false;
		}

		if ( empty( $tag ) ) {
			return true;
		}

		$tag_obj = $this->get_queried_object();

		$tag = array_map( 'strval', (array) $tag );

		if ( in_array( (string) $tag_obj->term_id, $tag, true ) ) {
			return true;
		} elseif ( in_array( $tag_obj->name, $tag, true ) ) {
			return true;
		} elseif ( in_array( $tag_obj->slug, $tag, true ) ) {
			return true;
		}

		return false;
	}

	/**
	 * Is the query for an existing custom taxonomy archive page?
	 *
	 * If the $taxonomy parameter is specified, this function will additionally
	 * check if the query is for that specific $taxonomy.
	 *
	 * If the $term parameter is specified in addition to the $taxonomy parameter,
	 * this function will additionally check if the query is for one of the terms
	 * specified.
	 *
	 * @since 3.1.0
	 *
	 * @global WP_Taxonomy[] $wp_taxonomies Registered taxonomies.
	 *
	 * @param string|string[]           $taxonomy Optional. Taxonomy slug or slugs to check against.
	 *                                            Default empty.
	 * @param int|string|int[]|string[] $term     Optional. Term ID, name, slug, or array of such
	 *                                            to check against. Default empty.
	 * @return bool Whether the query is for an existing custom taxonomy archive page.
	 *              True for custom taxonomy archive pages, false for built-in taxonomies
	 *              (category and tag archives).
	 */
	public function is_tax( $taxonomy = '', $term = '' ) {
		global $wp_taxonomies;

		if ( ! $this->is_tax ) {
			return false;
		}

		if ( empty( $taxonomy ) ) {
			return true;
		}

		$queried_object = $this->get_queried_object();
		$tax_array      = array_intersect( array_keys( $wp_taxonomies ), (array) $taxonomy );
		$term_array     = (array) $term;

		// Check that the taxonomy matches.
		if ( ! ( isset( $queried_object->taxonomy ) && count( $tax_array ) && in_array( $queried_object->taxonomy, $tax_array, true ) ) ) {
			return false;
		}

		// Only a taxonomy provided.
		if ( empty( $term ) ) {
			return true;
		}

		return isset( $queried_object->term_id ) &&
			count(
				array_intersect(
					array( $queried_object->term_id, $queried_object->name, $queried_object->slug ),
					$term_array
				)
			);
	}

	/**
	 * Whether the current URL is within the comments popup window.
	 *
	 * @since 3.1.0
	 * @deprecated 4.5.0
	 *
	 * @return false Always returns false.
	 */
	public function is_comments_popup() {
		_deprecated_function( __FUNCTION__, '4.5.0' );

		return false;
	}

	/**
	 * Is the query for an existing date archive?
	 *
	 * @since 3.1.0
	 *
	 * @return bool Whether the query is for an existing date archive.
	 */
	public function is_date() {
		return (bool) $this->is_date;
	}

	/**
	 * Is the query for an existing day archive?
	 *
	 * @since 3.1.0
	 *
	 * @return bool Whether the query is for an existing day archive.
	 */
	public function is_day() {
		return (bool) $this->is_day;
	}

	/**
	 * Is the query for a feed?
	 *
	 * @since 3.1.0
	 *
	 * @param string|string[] $feeds Optional. Feed type or array of feed types
	 *                                         to check against. Default empty.
	 * @return bool Whether the query is for a feed.
	 */
	public function is_feed( $feeds = '' ) {
		if ( empty( $feeds ) || ! $this->is_feed ) {
			return (bool) $this->is_feed;
		}

		$qv = $this->get( 'feed' );
		if ( 'feed' === $qv ) {
			$qv = get_default_feed();
		}

		return in_array( $qv, (array) $feeds, true );
	}

	/**
	 * Is the query for a comments feed?
	 *
	 * @since 3.1.0
	 *
	 * @return bool Whether the query is for a comments feed.
	 */
	public function is_comment_feed() {
		return (bool) $this->is_comment_feed;
	}

	/**
	 * Is the query for the front page of the site?
	 *
	 * This is for what is displayed at your site's main URL.
	 *
	 * Depends on the site's "Front page displays" Reading Settings 'show_on_front' and 'page_on_front'.
	 *
	 * If you set a static page for the front page of your site, this function will return
	 * true when viewing that page.
	 *
	 * Otherwise the same as @see WP_Query::is_home()
	 *
	 * @since 3.1.0
	 *
	 * @return bool Whether the query is for the front page of the site.
	 */
	public function is_front_page() {
		// Most likely case.
		if ( 'posts' === get_option( 'show_on_front' ) && $this->is_home() ) {
			return true;
		} elseif ( 'page' === get_option( 'show_on_front' ) && get_option( 'page_on_front' )
			&& $this->is_page( get_option( 'page_on_front' ) )
		) {
			return true;
		} else {
			return false;
		}
	}

	/**
	 * Is the query for the blog homepage?
	 *
	 * This is the page which shows the time based blog content of your site.
	 *
	 * Depends on the site's "Front page displays" Reading Settings 'show_on_front' and 'page_for_posts'.
	 *
	 * If you set a static page for the front page of your site, this function will return
	 * true only on the page you set as the "Posts page".
	 *
	 * @since 3.1.0
	 *
	 * @see WP_Query::is_front_page()
	 *
	 * @return bool Whether the query is for the blog homepage.
	 */
	public function is_home() {
		return (bool) $this->is_home;
	}

	/**
	 * Is the query for the Privacy Policy page?
	 *
	 * This is the page which shows the Privacy Policy content of your site.
	 *
	 * Depends on the site's "Change your Privacy Policy page" Privacy Settings 'wp_page_for_privacy_policy'.
	 *
	 * This function will return true only on the page you set as the "Privacy Policy page".
	 *
	 * @since 5.2.0
	 *
	 * @return bool Whether the query is for the Privacy Policy page.
	 */
	public function is_privacy_policy() {
		if ( get_option( 'wp_page_for_privacy_policy' )
			&& $this->is_page( get_option( 'wp_page_for_privacy_policy' ) )
		) {
			return true;
		} else {
			return false;
		}
	}

	/**
	 * Is the query for an existing month archive?
	 *
	 * @since 3.1.0
	 *
	 * @return bool Whether the query is for an existing month archive.
	 */
	public function is_month() {
		return (bool) $this->is_month;
	}

	/**
	 * Is the query for an existing single page?
	 *
	 * If the $page parameter is specified, this function will additionally
	 * check if the query is for one of the pages specified.
	 *
	 * @since 3.1.0
	 *
	 * @see WP_Query::is_single()
	 * @see WP_Query::is_singular()
	 *
	 * @param int|string|int[]|string[] $page Optional. Page ID, title, slug, path, or array of such
	 *                                        to check against. Default empty.
	 * @return bool Whether the query is for an existing single page.
	 */
	public function is_page( $page = '' ) {
		if ( ! $this->is_page ) {
			return false;
		}

		if ( empty( $page ) ) {
			return true;
		}

		$page_obj = $this->get_queried_object();

		$page = array_map( 'strval', (array) $page );

		if ( in_array( (string) $page_obj->ID, $page, true ) ) {
			return true;
		} elseif ( in_array( $page_obj->post_title, $page, true ) ) {
			return true;
		} elseif ( in_array( $page_obj->post_name, $page, true ) ) {
			return true;
		} else {
			foreach ( $page as $pagepath ) {
				if ( ! strpos( $pagepath, '/' ) ) {
					continue;
				}
				$pagepath_obj = get_page_by_path( $pagepath );

				if ( $pagepath_obj && ( $pagepath_obj->ID == $page_obj->ID ) ) {
					return true;
				}
			}
		}

		return false;
	}

	/**
	 * Is the query for a paged result and not for the first page?
	 *
	 * @since 3.1.0
	 *
	 * @return bool Whether the query is for a paged result.
	 */
	public function is_paged() {
		return (bool) $this->is_paged;
	}

	/**
	 * Is the query for a post or page preview?
	 *
	 * @since 3.1.0
	 *
	 * @return bool Whether the query is for a post or page preview.
	 */
	public function is_preview() {
		return (bool) $this->is_preview;
	}

	/**
	 * Is the query for the robots.txt file?
	 *
	 * @since 3.1.0
	 *
	 * @return bool Whether the query is for the robots.txt file.
	 */
	public function is_robots() {
		return (bool) $this->is_robots;
	}

	/**
	 * Is the query for the favicon.ico file?
	 *
	 * @since 5.4.0
	 *
	 * @return bool Whether the query is for the favicon.ico file.
	 */
	public function is_favicon() {
		return (bool) $this->is_favicon;
	}

	/**
	 * Is the query for a search?
	 *
	 * @since 3.1.0
	 *
	 * @return bool Whether the query is for a search.
	 */
	public function is_search() {
		return (bool) $this->is_search;
	}

	/**
	 * Is the query for an existing single post?
	 *
	 * Works for any post type excluding pages.
	 *
	 * If the $post parameter is specified, this function will additionally
	 * check if the query is for one of the Posts specified.
	 *
	 * @since 3.1.0
	 *
	 * @see WP_Query::is_page()
	 * @see WP_Query::is_singular()
	 *
	 * @param int|string|int[]|string[] $post Optional. Post ID, title, slug, path, or array of such
	 *                                        to check against. Default empty.
	 * @return bool Whether the query is for an existing single post.
	 */
	public function is_single( $post = '' ) {
		if ( ! $this->is_single ) {
			return false;
		}

		if ( empty( $post ) ) {
			return true;
		}

		$post_obj = $this->get_queried_object();

		$post = array_map( 'strval', (array) $post );

		if ( in_array( (string) $post_obj->ID, $post, true ) ) {
			return true;
		} elseif ( in_array( $post_obj->post_title, $post, true ) ) {
			return true;
		} elseif ( in_array( $post_obj->post_name, $post, true ) ) {
			return true;
		} else {
			foreach ( $post as $postpath ) {
				if ( ! strpos( $postpath, '/' ) ) {
					continue;
				}
				$postpath_obj = get_page_by_path( $postpath, OBJECT, $post_obj->post_type );

				if ( $postpath_obj && ( $postpath_obj->ID == $post_obj->ID ) ) {
					return true;
				}
			}
		}
		return false;
	}

	/**
	 * Is the query for an existing single post of any post type (post, attachment, page,
	 * custom post types)?
	 *
	 * If the $post_types parameter is specified, this function will additionally
	 * check if the query is for one of the Posts Types specified.
	 *
	 * @since 3.1.0
	 *
	 * @see WP_Query::is_page()
	 * @see WP_Query::is_single()
	 *
	 * @param string|string[] $post_types Optional. Post type or array of post types
	 *                                    to check against. Default empty.
	 * @return bool Whether the query is for an existing single post
	 *              or any of the given post types.
	 */
	public function is_singular( $post_types = '' ) {
		if ( empty( $post_types ) || ! $this->is_singular ) {
			return (bool) $this->is_singular;
		}

		$post_obj = $this->get_queried_object();

		return in_array( $post_obj->post_type, (array) $post_types, true );
	}

	/**
	 * Is the query for a specific time?
	 *
	 * @since 3.1.0
	 *
	 * @return bool Whether the query is for a specific time.
	 */
	public function is_time() {
		return (bool) $this->is_time;
	}

	/**
	 * Is the query for a trackback endpoint call?
	 *
	 * @since 3.1.0
	 *
	 * @return bool Whether the query is for a trackback endpoint call.
	 */
	public function is_trackback() {
		return (bool) $this->is_trackback;
	}

	/**
	 * Is the query for an existing year archive?
	 *
	 * @since 3.1.0
	 *
	 * @return bool Whether the query is for an existing year archive.
	 */
	public function is_year() {
		return (bool) $this->is_year;
	}

	/**
	 * Is the query a 404 (returns no results)?
	 *
	 * @since 3.1.0
	 *
	 * @return bool Whether the query is a 404 error.
	 */
	public function is_404() {
		return (bool) $this->is_404;
	}

	/**
	 * Is the query for an embedded post?
	 *
	 * @since 4.4.0
	 *
	 * @return bool Whether the query is for an embedded post.
	 */
	public function is_embed() {
		return (bool) $this->is_embed;
	}

	/**
	 * Is the query the main query?
	 *
	 * @since 3.3.0
	 *
	 * @global WP_Query $wp_query WordPress Query object.
	 *
	 * @return bool Whether the query is the main query.
	 */
	public function is_main_query() {
		global $wp_the_query;
		return $wp_the_query === $this;
	}

	/**
	 * Set up global post data.
	 *
	 * @since 4.1.0
	 * @since 4.4.0 Added the ability to pass a post ID to `$post`.
	 *
	 * @global int     $id
	 * @global WP_User $authordata
	 * @global string  $currentday
	 * @global string  $currentmonth
	 * @global int     $page
	 * @global array   $pages
	 * @global int     $multipage
	 * @global int     $more
	 * @global int     $numpages
	 *
	 * @param WP_Post|object|int $post WP_Post instance or Post ID/object.
	 * @return true True when finished.
	 */
	public function setup_postdata( $post ) {
		global $id, $authordata, $currentday, $currentmonth, $page, $pages, $multipage, $more, $numpages;

		if ( ! ( $post instanceof WP_Post ) ) {
			$post = get_post( $post );
		}

		if ( ! $post ) {
			return;
		}

		$elements = $this->generate_postdata( $post );
		if ( false === $elements ) {
			return;
		}

		$id           = $elements['id'];
		$authordata   = $elements['authordata'];
		$currentday   = $elements['currentday'];
		$currentmonth = $elements['currentmonth'];
		$page         = $elements['page'];
		$pages        = $elements['pages'];
		$multipage    = $elements['multipage'];
		$more         = $elements['more'];
		$numpages     = $elements['numpages'];

		/**
		 * Fires once the post data has been set up.
		 *
		 * @since 2.8.0
		 * @since 4.1.0 Introduced `$query` parameter.
		 *
		 * @param WP_Post  $post  The Post object (passed by reference).
		 * @param WP_Query $query The current Query object (passed by reference).
		 */
		do_action_ref_array( 'the_post', array( &$post, &$this ) );

		return true;
	}

	/**
	 * Generate post data.
	 *
	 * @since 5.2.0
	 *
	 * @param WP_Post|object|int $post WP_Post instance or Post ID/object.
	 * @return array|false Elements of post or false on failure.
	 */
	public function generate_postdata( $post ) {

		if ( ! ( $post instanceof WP_Post ) ) {
			$post = get_post( $post );
		}

		if ( ! $post ) {
			return false;
		}

		$id = (int) $post->ID;

		$authordata = get_userdata( $post->post_author );

		$currentday   = mysql2date( 'd.m.y', $post->post_date, false );
		$currentmonth = mysql2date( 'm', $post->post_date, false );
		$numpages     = 1;
		$multipage    = 0;
		$page         = $this->get( 'page' );
		if ( ! $page ) {
			$page = 1;
		}

		/*
		 * Force full post content when viewing the permalink for the $post,
		 * or when on an RSS feed. Otherwise respect the 'more' tag.
		 */
		if ( get_queried_object_id() === $post->ID && ( $this->is_page() || $this->is_single() ) ) {
			$more = 1;
		} elseif ( $this->is_feed() ) {
			$more = 1;
		} else {
			$more = 0;
		}

		$content = $post->post_content;
		if ( false !== strpos( $content, '<!--nextpage-->' ) ) {
			$content = str_replace( "\n<!--nextpage-->\n", '<!--nextpage-->', $content );
			$content = str_replace( "\n<!--nextpage-->", '<!--nextpage-->', $content );
			$content = str_replace( "<!--nextpage-->\n", '<!--nextpage-->', $content );

			// Remove the nextpage block delimiters, to avoid invalid block structures in the split content.
			$content = str_replace( '<!-- wp:nextpage -->', '', $content );
			$content = str_replace( '<!-- /wp:nextpage -->', '', $content );

			// Ignore nextpage at the beginning of the content.
			if ( 0 === strpos( $content, '<!--nextpage-->' ) ) {
				$content = substr( $content, 15 );
			}

			$pages = explode( '<!--nextpage-->', $content );
		} else {
			$pages = array( $post->post_content );
		}

		/**
		 * Filters the "pages" derived from splitting the post content.
		 *
		 * "Pages" are determined by splitting the post content based on the presence
		 * of `<!-- nextpage -->` tags.
		 *
		 * @since 4.4.0
		 *
		 * @param string[] $pages Array of "pages" from the post content split by `<!-- nextpage -->` tags.
		 * @param WP_Post  $post  Current post object.
		 */
		$pages = apply_filters( 'content_pagination', $pages, $post );

		$numpages = count( $pages );

		if ( $numpages > 1 ) {
			if ( $page > 1 ) {
				$more = 1;
			}
			$multipage = 1;
		} else {
			$multipage = 0;
		}

		$elements = compact( 'id', 'authordata', 'currentday', 'currentmonth', 'page', 'pages', 'multipage', 'more', 'numpages' );

		return $elements;
	}
	/**
	 * After looping through a nested query, this function
	 * restores the $post global to the current post in this query.
	 *
	 * @since 3.7.0
	 *
	 * @global WP_Post $post Global post object.
	 */
	public function reset_postdata() {
		if ( ! empty( $this->post ) ) {
			$GLOBALS['post'] = $this->post;
			$this->setup_postdata( $this->post );
		}
	}

	/**
	 * Lazyload term meta for posts in the loop.
	 *
	 * @since 4.4.0
	 * @deprecated 4.5.0 See wp_queue_posts_for_term_meta_lazyload().
	 *
	 * @param mixed $check
	 * @param int   $term_id
	 * @return mixed
	 */
	public function lazyload_term_meta( $check, $term_id ) {
		_deprecated_function( __METHOD__, '4.5.0' );
		return $check;
	}

	/**
	 * Lazyload comment meta for comments in the loop.
	 *
	 * @since 4.4.0
	 * @deprecated 4.5.0 See wp_queue_comments_for_comment_meta_lazyload().
	 *
	 * @param mixed $check
	 * @param int   $comment_id
	 * @return mixed
	 */
	public function lazyload_comment_meta( $check, $comment_id ) {
		_deprecated_function( __METHOD__, '4.5.0' );
		return $check;
	}
}
->ID, $sample );
}

/**
 * Retrieves the page permalink.
 *
 * Ignores page_on_front. Internal use only.
 *
 * @since 2.1.0
 * @access private
 *
 * @global WP_Rewrite $wp_rewrite WordPress rewrite component.
 *
 * @param int|WP_Post $post      Optional. Post ID or object. Default uses the global `$post`.
 * @param bool        $leavename Optional. Whether to keep the page name. Default false.
 * @param bool        $sample    Optional. Whether it should be treated as a sample permalink.
 *                               Default false.
 * @return string The page permalink.
 */
function _get_page_link( $post = false, $leavename = false, $sample = false ) {
	global $wp_rewrite;

	$post = get_post( $post );

	$force_plain_link = wp_force_plain_post_permalink( $post );

	$link = $wp_rewrite->get_page_permastruct();

	if ( ! empty( $link ) && ( ( isset( $post->post_status ) && ! $force_plain_link ) || $sample ) ) {
		if ( ! $leavename ) {
			$link = str_replace( '%pagename%', get_page_uri( $post ), $link );
		}

		$link = home_url( $link );
		$link = user_trailingslashit( $link, 'page' );
	} else {
		$link = home_url( '?page_id=' . $post->ID );
	}

	/**
	 * Filters the permalink for a non-page_on_front page.
	 *
	 * @since 2.1.0
	 *
	 * @param string $link    The page's permalink.
	 * @param int    $post_id The ID of the page.
	 */
	return apply_filters( '_get_page_link', $link, $post->ID );
}

/**
 * Retrieves the permalink for an attachment.
 *
 * This can be used in the WordPress Loop or outside of it.
 *
 * @since 2.0.0
 *
 * @global WP_Rewrite $wp_rewrite WordPress rewrite component.
 *
 * @param int|object $post      Optional. Post ID or object. Default uses the global `$post`.
 * @param bool       $leavename Optional. Whether to keep the page name. Default false.
 * @return string The attachment permalink.
 */
function get_attachment_link( $post = null, $leavename = false ) {
	global $wp_rewrite;

	$link = false;

	$post             = get_post( $post );
	$force_plain_link = wp_force_plain_post_permalink( $post );
	$parent_id        = $post->post_parent;
	$parent           = $parent_id ? get_post( $parent_id ) : false;
	$parent_valid     = true; // Default for no parent.
	if (
		$parent_id &&
		(
			$post->post_parent === $post->ID ||
			! $parent ||
			! is_post_type_viewable( get_post_type( $parent ) )
		)
	) {
		// Post is either its own parent or parent post unavailable.
		$parent_valid = false;
	}

	if ( $force_plain_link || ! $parent_valid ) {
		$link = false;
	} elseif ( $wp_rewrite->using_permalinks() && $parent ) {
		if ( 'page' === $parent->post_type ) {
			$parentlink = _get_page_link( $post->post_parent ); // Ignores page_on_front.
		} else {
			$parentlink = get_permalink( $post->post_parent );
		}

		if ( is_numeric( $post->post_name ) || false !== strpos( get_option( 'permalink_structure' ), '%category%' ) ) {
			$name = 'attachment/' . $post->post_name; // <permalink>/<int>/ is paged so we use the explicit attachment marker.
		} else {
			$name = $post->post_name;
		}

		if ( strpos( $parentlink, '?' ) === false ) {
			$link = user_trailingslashit( trailingslashit( $parentlink ) . '%postname%' );
		}

		if ( ! $leavename ) {
			$link = str_replace( '%postname%', $name, $link );
		}
	} elseif ( $wp_rewrite->using_permalinks() && ! $leavename ) {
		$link = home_url( user_trailingslashit( $post->post_name ) );
	}

	if ( ! $link ) {
		$link = home_url( '/?attachment_id=' . $post->ID );
	}

	/**
	 * Filters the permalink for an attachment.
	 *
	 * @since 2.0.0
	 * @since 5.6.0 Providing an empty string will now disable
	 *              the view attachment page link on the media modal.
	 *
	 * @param string $link    The attachment's permalink.
	 * @param int    $post_id Attachment ID.
	 */
	return apply_filters( 'attachment_link', $link, $post->ID );
}

/**
 * Retrieves the permalink for the year archives.
 *
 * @since 1.5.0
 *
 * @global WP_Rewrite $wp_rewrite WordPress rewrite component.
 *
 * @param int|false $year Integer of year. False for current year.
 * @return string The permalink for the specified year archive.
 */
function get_year_link( $year ) {
	global $wp_rewrite;
	if ( ! $year ) {
		$year = current_time( 'Y' );
	}
	$yearlink = $wp_rewrite->get_year_permastruct();
	if ( ! empty( $yearlink ) ) {
		$yearlink = str_replace( '%year%', $year, $yearlink );
		$yearlink = home_url( user_trailingslashit( $yearlink, 'year' ) );
	} else {
		$yearlink = home_url( '?m=' . $year );
	}

	/**
	 * Filters the year archive permalink.
	 *
	 * @since 1.5.0
	 *
	 * @param string $yearlink Permalink for the year archive.
	 * @param int    $year     Year for the archive.
	 */
	return apply_filters( 'year_link', $yearlink, $year );
}

/**
 * Retrieves the permalink for the month archives with year.
 *
 * @since 1.0.0
 *
 * @global WP_Rewrite $wp_rewrite WordPress rewrite component.
 *
 * @param int|false $year  Integer of year. False for current year.
 * @param int|false $month Integer of month. False for current month.
 * @return string The permalink for the specified month and year archive.
 */
function get_month_link( $year, $month ) {
	global $wp_rewrite;
	if ( ! $year ) {
		$year = current_time( 'Y' );
	}
	if ( ! $month ) {
		$month = current_time( 'm' );
	}
	$monthlink = $wp_rewrite->get_month_permastruct();
	if ( ! empty( $monthlink ) ) {
		$monthlink = str_replace( '%year%', $year, $monthlink );
		$monthlink = str_replace( '%monthnum%', zeroise( (int) $month, 2 ), $monthlink );
		$monthlink = home_url( user_trailingslashit( $monthlink, 'month' ) );
	} else {
		$monthlink = home_url( '?m=' . $year . zeroise( $month, 2 ) );
	}

	/**
	 * Filters the month archive permalink.
	 *
	 * @since 1.5.0
	 *
	 * @param string $monthlink Permalink for the month archive.
	 * @param int    $year      Year for the archive.
	 * @param int    $month     The month for the archive.
	 */
	return apply_filters( 'month_link', $monthlink, $year, $month );
}

/**
 * Retrieves the permalink for the day archives with year and month.
 *
 * @since 1.0.0
 *
 * @global WP_Rewrite $wp_rewrite WordPress rewrite component.
 *
 * @param int|false $year  Integer of year. False for current year.
 * @param int|false $month Integer of month. False for current month.
 * @param int|false $day   Integer of day. False for current day.
 * @return string The permalink for the specified day, month, and year archive.
 */
function get_day_link( $year, $month, $day ) {
	global $wp_rewrite;
	if ( ! $year ) {
		$year = current_time( 'Y' );
	}
	if ( ! $month ) {
		$month = current_time( 'm' );
	}
	if ( ! $day ) {
		$day = current_time( 'j' );
	}

	$daylink = $wp_rewrite->get_day_permastruct();
	if ( ! empty( $daylink ) ) {
		$daylink = str_replace( '%year%', $year, $daylink );
		$daylink = str_replace( '%monthnum%', zeroise( (int) $month, 2 ), $daylink );
		$daylink = str_replace( '%day%', zeroise( (int) $day, 2 ), $daylink );
		$daylink = home_url( user_trailingslashit( $daylink, 'day' ) );
	} else {
		$daylink = home_url( '?m=' . $year . zeroise( $month, 2 ) . zeroise( $day, 2 ) );
	}

	/**
	 * Filters the day archive permalink.
	 *
	 * @since 1.5.0
	 *
	 * @param string $daylink Permalink for the day archive.
	 * @param int    $year    Year for the archive.
	 * @param int    $month   Month for the archive.
	 * @param int    $day     The day for the archive.
	 */
	return apply_filters( 'day_link', $daylink, $year, $month, $day );
}

/**
 * Displays the permalink for the feed type.
 *
 * @since 3.0.0
 *
 * @param string $anchor The link's anchor text.
 * @param string $feed   Optional. Feed type. Possible values include 'rss2', 'atom'.
 *                       Default is the value of get_default_feed().
 */
function the_feed_link( $anchor, $feed = '' ) {
	$link = '<a href="' . esc_url( get_feed_link( $feed ) ) . '">' . $anchor . '</a>';

	/**
	 * Filters the feed link anchor tag.
	 *
	 * @since 3.0.0
	 *
	 * @param string $link The complete anchor tag for a feed link.
	 * @param string $feed The feed type. Possible values include 'rss2', 'atom',
	 *                     or an empty string for the default feed type.
	 */
	echo apply_filters( 'the_feed_link', $link, $feed );
}

/**
 * Retrieves the permalink for the feed type.
 *
 * @since 1.5.0
 *
 * @global WP_Rewrite $wp_rewrite WordPress rewrite component.
 *
 * @param string $feed Optional. Feed type. Possible values include 'rss2', 'atom'.
 *                     Default is the value of get_default_feed().
 * @return string The feed permalink.
 */
function get_feed_link( $feed = '' ) {
	global $wp_rewrite;

	$permalink = $wp_rewrite->get_feed_permastruct();

	if ( $permalink ) {
		if ( false !== strpos( $feed, 'comments_' ) ) {
			$feed      = str_replace( 'comments_', '', $feed );
			$permalink = $wp_rewrite->get_comment_feed_permastruct();
		}

		if ( get_default_feed() == $feed ) {
			$feed = '';
		}

		$permalink = str_replace( '%feed%', $feed, $permalink );
		$permalink = preg_replace( '#/+#', '/', "/$permalink" );
		$output    = home_url( user_trailingslashit( $permalink, 'feed' ) );
	} else {
		if ( empty( $feed ) ) {
			$feed = get_default_feed();
		}

		if ( false !== strpos( $feed, 'comments_' ) ) {
			$feed = str_replace( 'comments_', 'comments-', $feed );
		}

		$output = home_url( "?feed={$feed}" );
	}

	/**
	 * Filters the feed type permalink.
	 *
	 * @since 1.5.0
	 *
	 * @param string $output The feed permalink.
	 * @param string $feed   The feed type. Possible values include 'rss2', 'atom',
	 *                       or an empty string for the default feed type.
	 */
	return apply_filters( 'feed_link', $output, $feed );
}

/**
 * Retrieves the permalink for the post comments feed.
 *
 * @since 2.2.0
 *
 * @param int    $post_id Optional. Post ID. Default is the ID of the global `$post`.
 * @param string $feed    Optional. Feed type. Possible values include 'rss2', 'atom'.
 *                        Default is the value of get_default_feed().
 * @return string The permalink for the comments feed for the given post on success, empty string on failure.
 */
function get_post_comments_feed_link( $post_id = 0, $feed = '' ) {
	$post_id = absint( $post_id );

	if ( ! $post_id ) {
		$post_id = get_the_ID();
	}

	if ( empty( $feed ) ) {
		$feed = get_default_feed();
	}

	$post = get_post( $post_id );

	// Bail out if the post does not exist.
	if ( ! $post instanceof WP_Post ) {
		return '';
	}

	$unattached = 'attachment' === $post->post_type && 0 === (int) $post->post_parent;

	if ( get_option( 'permalink_structure' ) ) {
		if ( 'page' === get_option( 'show_on_front' ) && get_option( 'page_on_front' ) == $post_id ) {
			$url = _get_page_link( $post_id );
		} else {
			$url = get_permalink( $post_id );
		}

		if ( $unattached ) {
			$url = home_url( '/feed/' );
			if ( get_default_feed() !== $feed ) {
				$url .= "$feed/";
			}
			$url = add_query_arg( 'attachment_id', $post_id, $url );
		} else {
			$url = trailingslashit( $url ) . 'feed';
			if ( get_default_feed() != $feed ) {
				$url .= "/$feed";
			}
			$url = user_trailingslashit( $url, 'single_feed' );
		}
	} else {
		if ( $unattached ) {
			$url = add_query_arg(
				array(
					'feed'          => $feed,
					'attachment_id' => $post_id,
				),
				home_url( '/' )
			);
		} elseif ( 'page' === $post->post_type ) {
			$url = add_query_arg(
				array(
					'feed'    => $feed,
					'page_id' => $post_id,
				),
				home_url( '/' )
			);
		} else {
			$url = add_query_arg(
				array(
					'feed' => $feed,
					'p'    => $post_id,
				),
				home_url( '/' )
			);
		}
	}

	/**
	 * Filters the post comments feed permalink.
	 *
	 * @since 1.5.1
	 *
	 * @param string $url Post comments feed permalink.
	 */
	return apply_filters( 'post_comments_feed_link', $url );
}

/**
 * Displays the comment feed link for a post.
 *
 * Prints out the comment feed link for a post. Link text is placed in the
 * anchor. If no link text is specified, default text is used. If no post ID is
 * specified, the current post is used.
 *
 * @since 2.5.0
 *
 * @param string $link_text Optional. Descriptive link text. Default 'Comments Feed'.
 * @param int    $post_id   Optional. Post ID. Default is the ID of the global `$post`.
 * @param string $feed      Optional. Feed type. Possible values include 'rss2', 'atom'.
 *                          Default is the value of get_default_feed().
 */
function post_comments_feed_link( $link_text = '', $post_id = '', $feed = '' ) {
	$url = get_post_comments_feed_link( $post_id, $feed );
	if ( empty( $link_text ) ) {
		$link_text = __( 'Comments Feed' );
	}

	$link = '<a href="' . esc_url( $url ) . '">' . $link_text . '</a>';
	/**
	 * Filters the post comment feed link anchor tag.
	 *
	 * @since 2.8.0
	 *
	 * @param string $link    The complete anchor tag for the comment feed link.
	 * @param int    $post_id Post ID.
	 * @param string $feed    The feed type. Possible values include 'rss2', 'atom',
	 *                        or an empty string for the default feed type.
	 */
	echo apply_filters( 'post_comments_feed_link_html', $link, $post_id, $feed );
}

/**
 * Retrieves the feed link for a given author.
 *
 * Returns a link to the feed for all posts by a given author. A specific feed
 * can be requested or left blank to get the default feed.
 *
 * @since 2.5.0
 *
 * @param int    $author_id Author ID.
 * @param string $feed      Optional. Feed type. Possible values include 'rss2', 'atom'.
 *                          Default is the value of get_default_feed().
 * @return string Link to the feed for the author specified by $author_id.
 */
function get_author_feed_link( $author_id, $feed = '' ) {
	$author_id           = (int) $author_id;
	$permalink_structure = get_option( 'permalink_structure' );

	if ( empty( $feed ) ) {
		$feed = get_default_feed();
	}

	if ( ! $permalink_structure ) {
		$link = home_url( "?feed=$feed&amp;author=" . $author_id );
	} else {
		$link = get_author_posts_url( $author_id );
		if ( get_default_feed() == $feed ) {
			$feed_link = 'feed';
		} else {
			$feed_link = "feed/$feed";
		}

		$link = trailingslashit( $link ) . user_trailingslashit( $feed_link, 'feed' );
	}

	/**
	 * Filters the feed link for a given author.
	 *
	 * @since 1.5.1
	 *
	 * @param string $link The author feed link.
	 * @param string $feed Feed type. Possible values include 'rss2', 'atom'.
	 */
	$link = apply_filters( 'author_feed_link', $link, $feed );

	return $link;
}

/**
 * Retrieves the feed link for a category.
 *
 * Returns a link to the feed for all posts in a given category. A specific feed
 * can be requested or left blank to get the default feed.
 *
 * @since 2.5.0
 *
 * @param int|WP_Term|object $cat  The ID or term object whose feed link will be retrieved.
 * @param string             $feed Optional. Feed type. Possible values include 'rss2', 'atom'.
 *                                 Default is the value of get_default_feed().
 * @return string Link to the feed for the category specified by $cat_id.
 */
function get_category_feed_link( $cat, $feed = '' ) {
	return get_term_feed_link( $cat, 'category', $feed );
}

/**
 * Retrieves the feed link for a term.
 *
 * Returns a link to the feed for all posts in a given term. A specific feed
 * can be requested or left blank to get the default feed.
 *
 * @since 3.0.0
 *
 * @param int|WP_Term|object $term     The ID or term object whose feed link will be retrieved.
 * @param string             $taxonomy Optional. Taxonomy of `$term_id`.
 * @param string             $feed     Optional. Feed type. Possible values include 'rss2', 'atom'.
 *                                     Default is the value of get_default_feed().
 * @return string|false Link to the feed for the term specified by $term_id and $taxonomy.
 */
function get_term_feed_link( $term, $taxonomy = '', $feed = '' ) {
	if ( ! is_object( $term ) ) {
		$term = (int) $term;
	}

	$term = get_term( $term, $taxonomy );

	if ( empty( $term ) || is_wp_error( $term ) ) {
		return false;
	}

	$taxonomy = $term->taxonomy;

	if ( empty( $feed ) ) {
		$feed = get_default_feed();
	}

	$permalink_structure = get_option( 'permalink_structure' );

	if ( ! $permalink_structure ) {
		if ( 'category' === $taxonomy ) {
			$link = home_url( "?feed=$feed&amp;cat=$term->term_id" );
		} elseif ( 'post_tag' === $taxonomy ) {
			$link = home_url( "?feed=$feed&amp;tag=$term->slug" );
		} else {
			$t    = get_taxonomy( $taxonomy );
			$link = home_url( "?feed=$feed&amp;$t->query_var=$term->slug" );
		}
	} else {
		$link = get_term_link( $term, $term->taxonomy );
		if ( get_default_feed() == $feed ) {
			$feed_link = 'feed';
		} else {
			$feed_link = "feed/$feed";
		}

		$link = trailingslashit( $link ) . user_trailingslashit( $feed_link, 'feed' );
	}

	if ( 'category' === $taxonomy ) {
		/**
		 * Filters the category feed link.
		 *
		 * @since 1.5.1
		 *
		 * @param string $link The category feed link.
		 * @param string $feed Feed type. Possible values include 'rss2', 'atom'.
		 */
		$link = apply_filters( 'category_feed_link', $link, $feed );
	} elseif ( 'post_tag' === $taxonomy ) {
		/**
		 * Filters the post tag feed link.
		 *
		 * @since 2.3.0
		 *
		 * @param string $link The tag feed link.
		 * @param string $feed Feed type. Possible values include 'rss2', 'atom'.
		 */
		$link = apply_filters( 'tag_feed_link', $link, $feed );
	} else {
		/**
		 * Filters the feed link for a taxonomy other than 'category' or 'post_tag'.
		 *
		 * @since 3.0.0
		 *
		 * @param string $link     The taxonomy feed link.
		 * @param string $feed     Feed type. Possible values include 'rss2', 'atom'.
		 * @param string $taxonomy The taxonomy name.
		 */
		$link = apply_filters( 'taxonomy_feed_link', $link, $feed, $taxonomy );
	}

	return $link;
}

/**
 * Retrieves the permalink for a tag feed.
 *
 * @since 2.3.0
 *
 * @param int|WP_Term|object $tag  The ID or term object whose feed link will be retrieved.
 * @param string             $feed Optional. Feed type. Possible values include 'rss2', 'atom'.
 *                                 Default is the value of get_default_feed().
 * @return string                  The feed permalink for the given tag.
 */
function get_tag_feed_link( $tag, $feed = '' ) {
	return get_term_feed_link( $tag, 'post_tag', $feed );
}

/**
 * Retrieves the edit link for a tag.
 *
 * @since 2.7.0
 *
 * @param int|WP_Term|object $tag      The ID or term object whose edit link will be retrieved.
 * @param string             $taxonomy Optional. Taxonomy slug. Default 'post_tag'.
 * @return string The edit tag link URL for the given tag.
 */
function get_edit_tag_link( $tag, $taxonomy = 'post_tag' ) {
	/**
	 * Filters the edit link for a tag (or term in another taxonomy).
	 *
	 * @since 2.7.0
	 *
	 * @param string $link The term edit link.
	 */
	return apply_filters( 'get_edit_tag_link', get_edit_term_link( $tag, $taxonomy ) );
}

/**
 * Displays or retrieves the edit link for a tag with formatting.
 *
 * @since 2.7.0
 *
 * @param string  $link   Optional. Anchor text. If empty, default is 'Edit This'. Default empty.
 * @param string  $before Optional. Display before edit link. Default empty.
 * @param string  $after  Optional. Display after edit link. Default empty.
 * @param WP_Term $tag    Optional. Term object. If null, the queried object will be inspected.
 *                        Default null.
 */
function edit_tag_link( $link = '', $before = '', $after = '', $tag = null ) {
	$link = edit_term_link( $link, '', '', $tag, false );

	/**
	 * Filters the anchor tag for the edit link for a tag (or term in another taxonomy).
	 *
	 * @since 2.7.0
	 *
	 * @param string $link The anchor tag for the edit link.
	 */
	echo $before . apply_filters( 'edit_tag_link', $link ) . $after;
}

/**
 * Retrieves the URL for editing a given term.
 *
 * @since 3.1.0
 * @since 4.5.0 The `$taxonomy` parameter was made optional.
 *
 * @param int|WP_Term|object $term        The ID or term object whose edit link will be retrieved.
 * @param string             $taxonomy    Optional. Taxonomy. Defaults to the taxonomy of the term identified
 *                                        by `$term`.
 * @param string             $object_type Optional. The object type. Used to highlight the proper post type
 *                                        menu on the linked page. Defaults to the first object_type associated
 *                                        with the taxonomy.
 * @return string|null The edit term link URL for the given term, or null on failure.
 */
function get_edit_term_link( $term, $taxonomy = '', $object_type = '' ) {
	$term = get_term( $term, $taxonomy );
	if ( ! $term || is_wp_error( $term ) ) {
		return;
	}

	$tax     = get_taxonomy( $term->taxonomy );
	$term_id = $term->term_id;
	if ( ! $tax || ! current_user_can( 'edit_term', $term_id ) ) {
		return;
	}

	$args = array(
		'taxonomy' => $taxonomy,
		'tag_ID'   => $term_id,
	);

	if ( $object_type ) {
		$args['post_type'] = $object_type;
	} elseif ( ! empty( $tax->object_type ) ) {
		$args['post_type'] = reset( $tax->object_type );
	}

	if ( $tax->show_ui ) {
		$location = add_query_arg( $args, admin_url( 'term.php' ) );
	} else {
		$location = '';
	}

	/**
	 * Filters the edit link for a term.
	 *
	 * @since 3.1.0
	 *
	 * @param string $location    The edit link.
	 * @param int    $term_id     Term ID.
	 * @param string $taxonomy    Taxonomy name.
	 * @param string $object_type The object type.
	 */
	return apply_filters( 'get_edit_term_link', $location, $term_id, $taxonomy, $object_type );
}

/**
 * Displays or retrieves the edit term link with formatting.
 *
 * @since 3.1.0
 *
 * @param string           $link   Optional. Anchor text. If empty, default is 'Edit This'. Default empty.
 * @param string           $before Optional. Display before edit link. Default empty.
 * @param string           $after  Optional. Display after edit link. Default empty.
 * @param int|WP_Term|null $term   Optional. Term ID or object. If null, the queried object will be inspected. Default null.
 * @param bool             $echo   Optional. Whether or not to echo the return. Default true.
 * @return string|void HTML content.
 */
function edit_term_link( $link = '', $before = '', $after = '', $term = null, $echo = true ) {
	if ( is_null( $term ) ) {
		$term = get_queried_object();
	} else {
		$term = get_term( $term );
	}

	if ( ! $term ) {
		return;
	}

	$tax = get_taxonomy( $term->taxonomy );
	if ( ! current_user_can( 'edit_term', $term->term_id ) ) {
		return;
	}

	if ( empty( $link ) ) {
		$link = __( 'Edit This' );
	}

	$link = '<a href="' . get_edit_term_link( $term->term_id, $term->taxonomy ) . '">' . $link . '</a>';

	/**
	 * Filters the anchor tag for the edit link of a term.
	 *
	 * @since 3.1.0
	 *
	 * @param string $link    The anchor tag for the edit link.
	 * @param int    $term_id Term ID.
	 */
	$link = $before . apply_filters( 'edit_term_link', $link, $term->term_id ) . $after;

	if ( $echo ) {
		echo $link;
	} else {
		return $link;
	}
}

/**
 * Retrieves the permalink for a search.
 *
 * @since 3.0.0
 *
 * @global WP_Rewrite $wp_rewrite WordPress rewrite component.
 *
 * @param string $query Optional. The query string to use. If empty the current query is used. Default empty.
 * @return string The search permalink.
 */
function get_search_link( $query = '' ) {
	global $wp_rewrite;

	if ( empty( $query ) ) {
		$search = get_search_query( false );
	} else {
		$search = stripslashes( $query );
	}

	$permastruct = $wp_rewrite->get_search_permastruct();

	if ( empty( $permastruct ) ) {
		$link = home_url( '?s=' . urlencode( $search ) );
	} else {
		$search = urlencode( $search );
		$search = str_replace( '%2F', '/', $search ); // %2F(/) is not valid within a URL, send it un-encoded.
		$link   = str_replace( '%search%', $search, $permastruct );
		$link   = home_url( user_trailingslashit( $link, 'search' ) );
	}

	/**
	 * Filters the search permalink.
	 *
	 * @since 3.0.0
	 *
	 * @param string $link   Search permalink.
	 * @param string $search The URL-encoded search term.
	 */
	return apply_filters( 'search_link', $link, $search );
}

/**
 * Retrieves the permalink for the search results feed.
 *
 * @since 2.5.0
 *
 * @global WP_Rewrite $wp_rewrite WordPress rewrite component.
 *
 * @param string $search_query Optional. Search query. Default empty.
 * @param string $feed         Optional. Feed type. Possible values include 'rss2', 'atom'.
 *                             Default is the value of get_default_feed().
 * @return string The search results feed permalink.
 */
function get_search_feed_link( $search_query = '', $feed = '' ) {
	global $wp_rewrite;
	$link = get_search_link( $search_query );

	if ( empty( $feed ) ) {
		$feed = get_default_feed();
	}

	$permastruct = $wp_rewrite->get_search_permastruct();

	if ( empty( $permastruct ) ) {
		$link = add_query_arg( 'feed', $feed, $link );
	} else {
		$link  = trailingslashit( $link );
		$link .= "feed/$feed/";
	}

	/**
	 * Filters the search feed link.
	 *
	 * @since 2.5.0
	 *
	 * @param string $link Search feed link.
	 * @param string $feed Feed type. Possible values include 'rss2', 'atom'.
	 * @param string $type The search type. One of 'posts' or 'comments'.
	 */
	return apply_filters( 'search_feed_link', $link, $feed, 'posts' );
}

/**
 * Retrieves the permalink for the search results comments feed.
 *
 * @since 2.5.0
 *
 * @global WP_Rewrite $wp_rewrite WordPress rewrite component.
 *
 * @param string $search_query Optional. Search query. Default empty.
 * @param string $feed         Optional. Feed type. Possible values include 'rss2', 'atom'.
 *                             Default is the value of get_default_feed().
 * @return string The comments feed search results permalink.
 */
function get_search_comments_feed_link( $search_query = '', $feed = '' ) {
	global $wp_rewrite;

	if ( empty( $feed ) ) {
		$feed = get_default_feed();
	}

	$link = get_search_feed_link( $search_query, $feed );

	$permastruct = $wp_rewrite->get_search_permastruct();

	if ( empty( $permastruct ) ) {
		$link = add_query_arg( 'feed', 'comments-' . $feed, $link );
	} else {
		$link = add_query_arg( 'withcomments', 1, $link );
	}

	/** This filter is documented in wp-includes/link-template.php */
	return apply_filters( 'search_feed_link', $link, $feed, 'comments' );
}

/**
 * Retrieves the permalink for a post type archive.
 *
 * @since 3.1.0
 * @since 4.5.0 Support for posts was added.
 *
 * @global WP_Rewrite $wp_rewrite WordPress rewrite component.
 *
 * @param string $post_type Post type.
 * @return string|false The post type archive permalink. False if the post type
 *                      does not exist or does not have an archive.
 */
function get_post_type_archive_link( $post_type ) {
	global $wp_rewrite;

	$post_type_obj = get_post_type_object( $post_type );
	if ( ! $post_type_obj ) {
		return false;
	}

	if ( 'post' === $post_type ) {
		$show_on_front  = get_option( 'show_on_front' );
		$page_for_posts = get_option( 'page_for_posts' );

		if ( 'page' === $show_on_front && $page_for_posts ) {
			$link = get_permalink( $page_for_posts );
		} else {
			$link = get_home_url();
		}
		/** This filter is documented in wp-includes/link-template.php */
		return apply_filters( 'post_type_archive_link', $link, $post_type );
	}

	if ( ! $post_type_obj->has_archive ) {
		return false;
	}

	if ( get_option( 'permalink_structure' ) && is_array( $post_type_obj->rewrite ) ) {
		$struct = ( true === $post_type_obj->has_archive ) ? $post_type_obj->rewrite['slug'] : $post_type_obj->has_archive;
		if ( $post_type_obj->rewrite['with_front'] ) {
			$struct = $wp_rewrite->front . $struct;
		} else {
			$struct = $wp_rewrite->root . $struct;
		}
		$link = home_url( user_trailingslashit( $struct, 'post_type_archive' ) );
	} else {
		$link = home_url( '?post_type=' . $post_type );
	}

	/**
	 * Filters the post type archive permalink.
	 *
	 * @since 3.1.0
	 *
	 * @param string $link      The post type archive permalink.
	 * @param string $post_type Post type name.
	 */
	return apply_filters( 'post_type_archive_link', $link, $post_type );
}

/**
 * Retrieves the permalink for a post type archive feed.
 *
 * @since 3.1.0
 *
 * @param string $post_type Post type.
 * @param string $feed      Optional. Feed type. Possible values include 'rss2', 'atom'.
 *                          Default is the value of get_default_feed().
 * @return string|false The post type feed permalink. False if the post type
 *                      does not exist or does not have an archive.
 */
function get_post_type_archive_feed_link( $post_type, $feed = '' ) {
	$default_feed = get_default_feed();
	if ( empty( $feed ) ) {
		$feed = $default_feed;
	}

	$link = get_post_type_archive_link( $post_type );
	if ( ! $link ) {
		return false;
	}

	$post_type_obj = get_post_type_object( $post_type );
	if ( get_option( 'permalink_structure' ) && is_array( $post_type_obj->rewrite ) && $post_type_obj->rewrite['feeds'] ) {
		$link  = trailingslashit( $link );
		$link .= 'feed/';
		if ( $feed != $default_feed ) {
			$link .= "$feed/";
		}
	} else {
		$link = add_query_arg( 'feed', $feed, $link );
	}

	/**
	 * Filters the post type archive feed link.
	 *
	 * @since 3.1.0
	 *
	 * @param string $link The post type archive feed link.
	 * @param string $feed Feed type. Possible values include 'rss2', 'atom'.
	 */
	return apply_filters( 'post_type_archive_feed_link', $link, $feed );
}

/**
 * Retrieves the URL used for the post preview.
 *
 * Allows additional query args to be appended.
 *
 * @since 4.4.0
 *
 * @param int|WP_Post $post         Optional. Post ID or `WP_Post` object. Defaults to global `$post`.
 * @param array       $query_args   Optional. Array of additional query args to be appended to the link.
 *                                  Default empty array.
 * @param string      $preview_link Optional. Base preview link to be used if it should differ from the
 *                                  post permalink. Default empty.
 * @return string|null URL used for the post preview, or null if the post does not exist.
 */
function get_preview_post_link( $post = null, $query_args = array(), $preview_link = '' ) {
	$post = get_post( $post );
	if ( ! $post ) {
		return;
	}

	$post_type_object = get_post_type_object( $post->post_type );
	if ( is_post_type_viewable( $post_type_object ) ) {
		if ( ! $preview_link ) {
			$preview_link = set_url_scheme( get_permalink( $post ) );
		}

		$query_args['preview'] = 'true';
		$preview_link          = add_query_arg( $query_args, $preview_link );
	}

	/**
	 * Filters the URL used for a post preview.
	 *
	 * @since 2.0.5
	 * @since 4.0.0 Added the `$post` parameter.
	 *
	 * @param string  $preview_link URL used for the post preview.
	 * @param WP_Post $post         Post object.
	 */
	return apply_filters( 'preview_post_link', $preview_link, $post );
}

/**
 * Retrieves the edit post link for post.
 *
 * Can be used within the WordPress loop or outside of it. Can be used with
 * pages, posts, attachments, and revisions.
 *
 * @since 2.3.0
 *
 * @param int|WP_Post $id      Optional. Post ID or post object. Default is the global `$post`.
 * @param string      $context Optional. How to output the '&' character. Default '&amp;'.
 * @return string|null The edit post link for the given post. Null if the post type does not exist
 *                     or does not allow an editing UI.
 */
function get_edit_post_link( $id = 0, $context = 'display' ) {
	$post = get_post( $id );
	if ( ! $post ) {
		return;
	}

	if ( 'revision' === $post->post_type ) {
		$action = '';
	} elseif ( 'display' === $context ) {
		$action = '&amp;action=edit';
	} else {
		$action = '&action=edit';
	}

	$post_type_object = get_post_type_object( $post->post_type );
	if ( ! $post_type_object ) {
		return;
	}

	if ( ! current_user_can( 'edit_post', $post->ID ) ) {
		return;
	}

	if ( $post_type_object->_edit_link ) {
		$link = admin_url( sprintf( $post_type_object->_edit_link . $action, $post->ID ) );
	} else {
		$link = '';
	}

	/**
	 * Filters the post edit link.
	 *
	 * @since 2.3.0
	 *
	 * @param string $link    The edit link.
	 * @param int    $post_id Post ID.
	 * @param string $context The link context. If set to 'display' then ampersands
	 *                        are encoded.
	 */
	return apply_filters( 'get_edit_post_link', $link, $post->ID, $context );
}

/**
 * Displays the edit post link for post.
 *
 * @since 1.0.0
 * @since 4.4.0 The `$class` argument was added.
 *
 * @param string      $text   Optional. Anchor text. If null, default is 'Edit This'. Default null.
 * @param string      $before Optional. Display before edit link. Default empty.
 * @param string      $after  Optional. Display after edit link. Default empty.
 * @param int|WP_Post $id     Optional. Post ID or post object. Default is the global `$post`.
 * @param string      $class  Optional. Add custom class to link. Default 'post-edit-link'.
 */
function edit_post_link( $text = null, $before = '', $after = '', $id = 0, $class = 'post-edit-link' ) {
	$post = get_post( $id );
	if ( ! $post ) {
		return;
	}

	$url = get_edit_post_link( $post->ID );
	if ( ! $url ) {
		return;
	}

	if ( null === $text ) {
		$text = __( 'Edit This' );
	}

	$link = '<a class="' . esc_attr( $class ) . '" href="' . esc_url( $url ) . '">' . $text . '</a>';

	/**
	 * Filters the post edit link anchor tag.
	 *
	 * @since 2.3.0
	 *
	 * @param string $link    Anchor tag for the edit link.
	 * @param int    $post_id Post ID.
	 * @param string $text    Anchor text.
	 */
	echo $before . apply_filters( 'edit_post_link', $link, $post->ID, $text ) . $after;
}

/**
 * Retrieves the delete posts link for post.
 *
 * Can be used within the WordPress loop or outside of it, with any post type.
 *
 * @since 2.9.0
 *
 * @param int|WP_Post $id           Optional. Post ID or post object. Default is the global `$post`.
 * @param string      $deprecated   Not used.
 * @param bool        $force_delete Optional. Whether to bypass Trash and force deletion. Default false.
 * @return string|void The delete post link URL for the given post.
 */
function get_delete_post_link( $id = 0, $deprecated = '', $force_delete = false ) {
	if ( ! empty( $deprecated ) ) {
		_deprecated_argument( __FUNCTION__, '3.0.0' );
	}

	$post = get_post( $id );
	if ( ! $post ) {
		return;
	}

	$post_type_object = get_post_type_object( $post->post_type );
	if ( ! $post_type_object ) {
		return;
	}

	if ( ! current_user_can( 'delete_post', $post->ID ) ) {
		return;
	}

	$action = ( $force_delete || ! EMPTY_TRASH_DAYS ) ? 'delete' : 'trash';

	$delete_link = add_query_arg( 'action', $action, admin_url( sprintf( $post_type_object->_edit_link, $post->ID ) ) );

	/**
	 * Filters the post delete link.
	 *
	 * @since 2.9.0
	 *
	 * @param string $link         The delete link.
	 * @param int    $post_id      Post ID.
	 * @param bool   $force_delete Whether to bypass the Trash and force deletion. Default false.
	 */
	return apply_filters( 'get_delete_post_link', wp_nonce_url( $delete_link, "$action-post_{$post->ID}" ), $post->ID, $force_delete );
}

/**
 * Retrieves the edit comment link.
 *
 * @since 2.3.0
 *
 * @param int|WP_Comment $comment_id Optional. Comment ID or WP_Comment object.
 * @return string|void The edit comment link URL for the given comment.
 */
function get_edit_comment_link( $comment_id = 0 ) {
	$comment = get_comment( $comment_id );

	if ( ! current_user_can( 'edit_comment', $comment->comment_ID ) ) {
		return;
	}

	$location = admin_url( 'comment.php?action=editcomment&amp;c=' ) . $comment->comment_ID;

	/**
	 * Filters the comment edit link.
	 *
	 * @since 2.3.0
	 *
	 * @param string $location The edit link.
	 */
	return apply_filters( 'get_edit_comment_link', $location );
}

/**
 * Displays the edit comment link with formatting.
 *
 * @since 1.0.0
 *
 * @param string $text   Optional. Anchor text. If null, default is 'Edit This'. Default null.
 * @param string $before Optional. Display before edit link. Default empty.
 * @param string $after  Optional. Display after edit link. Default empty.
 */
function edit_comment_link( $text = null, $before = '', $after = '' ) {
	$comment = get_comment();

	if ( ! current_user_can( 'edit_comment', $comment->comment_ID ) ) {
		return;
	}

	if ( null === $text ) {
		$text = __( 'Edit This' );
	}

	$link = '<a class="comment-edit-link" href="' . esc_url( get_edit_comment_link( $comment ) ) . '">' . $text . '</a>';

	/**
	 * Filters the comment edit link anchor tag.
	 *
	 * @since 2.3.0
	 *
	 * @param string $link       Anchor tag for the edit link.
	 * @param string $comment_id Comment ID as a numeric string.
	 * @param string $text       Anchor text.
	 */
	echo $before . apply_filters( 'edit_comment_link', $link, $comment->comment_ID, $text ) . $after;
}

/**
 * Displays the edit bookmark link.
 *
 * @since 2.7.0
 *
 * @param int|stdClass $link Optional. Bookmark ID. Default is the ID of the current bookmark.
 * @return string|void The edit bookmark link URL.
 */
function get_edit_bookmark_link( $link = 0 ) {
	$link = get_bookmark( $link );

	if ( ! current_user_can( 'manage_links' ) ) {
		return;
	}

	$location = admin_url( 'link.php?action=edit&amp;link_id=' ) . $link->link_id;

	/**
	 * Filters the bookmark edit link.
	 *
	 * @since 2.7.0
	 *
	 * @param string $location The edit link.
	 * @param int    $link_id  Bookmark ID.
	 */
	return apply_filters( 'get_edit_bookmark_link', $location, $link->link_id );
}

/**
 * Displays the edit bookmark link anchor content.
 *
 * @since 2.7.0
 *
 * @param string $link     Optional. Anchor text. If empty, default is 'Edit This'. Default empty.
 * @param string $before   Optional. Display before edit link. Default empty.
 * @param string $after    Optional. Display after edit link. Default empty.
 * @param int    $bookmark Optional. Bookmark ID. Default is the current bookmark.
 */
function edit_bookmark_link( $link = '', $before = '', $after = '', $bookmark = null ) {
	$bookmark = get_bookmark( $bookmark );

	if ( ! current_user_can( 'manage_links' ) ) {
		return;
	}

	if ( empty( $link ) ) {
		$link = __( 'Edit This' );
	}

	$link = '<a href="' . esc_url( get_edit_bookmark_link( $bookmark ) ) . '">' . $link . '</a>';

	/**
	 * Filters the bookmark edit link anchor tag.
	 *
	 * @since 2.7.0
	 *
	 * @param string $link    Anchor tag for the edit link.
	 * @param int    $link_id Bookmark ID.
	 */
	echo $before . apply_filters( 'edit_bookmark_link', $link, $bookmark->link_id ) . $after;
}

/**
 * Retrieves the edit user link.
 *
 * @since 3.5.0
 *
 * @param int $user_id Optional. User ID. Defaults to the current user.
 * @return string URL to edit user page or empty string.
 */
function get_edit_user_link( $user_id = null ) {
	if ( ! $user_id ) {
		$user_id = get_current_user_id();
	}

	if ( empty( $user_id ) || ! current_user_can( 'edit_user', $user_id ) ) {
		return '';
	}

	$user = get_userdata( $user_id );

	if ( ! $user ) {
		return '';
	}

	if ( get_current_user_id() == $user->ID ) {
		$link = get_edit_profile_url( $user->ID );
	} else {
		$link = add_query_arg( 'user_id', $user->ID, self_admin_url( 'user-edit.php' ) );
	}

	/**
	 * Filters the user edit link.
	 *
	 * @since 3.5.0
	 *
	 * @param string $link    The edit link.
	 * @param int    $user_id User ID.
	 */
	return apply_filters( 'get_edit_user_link', $link, $user->ID );
}

//
// Navigation links.
//

/**
 * Retrieves the previous post that is adjacent to the current post.
 *
 * @since 1.5.0
 *
 * @param bool         $in_same_term   Optional. Whether post should be in a same taxonomy term. Default false.
 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty.
 * @param string       $taxonomy       Optional. Taxonomy, if $in_same_term is true. Default 'category'.
 * @return WP_Post|null|string Post object if successful. Null if global $post is not set. Empty string if no
 *                             corresponding post exists.
 */
function get_previous_post( $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
	return get_adjacent_post( $in_same_term, $excluded_terms, true, $taxonomy );
}

/**
 * Retrieves the next post that is adjacent to the current post.
 *
 * @since 1.5.0
 *
 * @param bool         $in_same_term   Optional. Whether post should be in a same taxonomy term. Default false.
 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty.
 * @param string       $taxonomy       Optional. Taxonomy, if $in_same_term is true. Default 'category'.
 * @return WP_Post|null|string Post object if successful. Null if global $post is not set. Empty string if no
 *                             corresponding post exists.
 */
function get_next_post( $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
	return get_adjacent_post( $in_same_term, $excluded_terms, false, $taxonomy );
}

/**
 * Retrieves the adjacent post.
 *
 * Can either be next or previous post.
 *
 * @since 2.5.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param bool         $in_same_term   Optional. Whether post should be in a same taxonomy term. Default false.
 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty string.
 * @param bool         $previous       Optional. Whether to retrieve previous post. Default true
 * @param string       $taxonomy       Optional. Taxonomy, if $in_same_term is true. Default 'category'.
 * @return WP_Post|null|string Post object if successful. Null if global $post is not set. Empty string if no
 *                             corresponding post exists.
 */
function get_adjacent_post( $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) {
	global $wpdb;

	$post = get_post();
	if ( ! $post || ! taxonomy_exists( $taxonomy ) ) {
		return null;
	}

	$current_post_date = $post->post_date;

	$join     = '';
	$where    = '';
	$adjacent = $previous ? 'previous' : 'next';

	if ( ! empty( $excluded_terms ) && ! is_array( $excluded_terms ) ) {
		// Back-compat, $excluded_terms used to be $excluded_categories with IDs separated by " and ".
		if ( false !== strpos( $excluded_terms, ' and ' ) ) {
			_deprecated_argument(
				__FUNCTION__,
				'3.3.0',
				sprintf(
					/* translators: %s: The word 'and'. */
					__( 'Use commas instead of %s to separate excluded terms.' ),
					"'and'"
				)
			);
			$excluded_terms = explode( ' and ', $excluded_terms );
		} else {
			$excluded_terms = explode( ',', $excluded_terms );
		}

		$excluded_terms = array_map( 'intval', $excluded_terms );
	}

	/**
	 * Filters the IDs of terms excluded from adjacent post queries.
	 *
	 * The dynamic portion of the hook name, `$adjacent`, refers to the type
	 * of adjacency, 'next' or 'previous'.
	 *
	 * Possible hook names include:
	 *
	 *  - `get_next_post_excluded_terms`
	 *  - `get_previous_post_excluded_terms`
	 *
	 * @since 4.4.0
	 *
	 * @param array|string $excluded_terms Array of excluded term IDs. Empty string if none were provided.
	 */
	$excluded_terms = apply_filters( "get_{$adjacent}_post_excluded_terms", $excluded_terms );

	if ( $in_same_term || ! empty( $excluded_terms ) ) {
		if ( $in_same_term ) {
			$join  .= " INNER JOIN $wpdb->term_relationships AS tr ON p.ID = tr.object_id INNER JOIN $wpdb->term_taxonomy tt ON tr.term_taxonomy_id = tt.term_taxonomy_id";
			$where .= $wpdb->prepare( 'AND tt.taxonomy = %s', $taxonomy );

			if ( ! is_object_in_taxonomy( $post->post_type, $taxonomy ) ) {
				return '';
			}
			$term_array = wp_get_object_terms( $post->ID, $taxonomy, array( 'fields' => 'ids' ) );

			// Remove any exclusions from the term array to include.
			$term_array = array_diff( $term_array, (array) $excluded_terms );
			$term_array = array_map( 'intval', $term_array );

			if ( ! $term_array || is_wp_error( $term_array ) ) {
				return '';
			}

			$where .= ' AND tt.term_id IN (' . implode( ',', $term_array ) . ')';
		}

		if ( ! empty( $excluded_terms ) ) {
			$where .= " AND p.ID NOT IN ( SELECT tr.object_id FROM $wpdb->term_relationships tr LEFT JOIN $wpdb->term_taxonomy tt ON (tr.term_taxonomy_id = tt.term_taxonomy_id) WHERE tt.term_id IN (" . implode( ',', array_map( 'intval', $excluded_terms ) ) . ') )';
		}
	}

	// 'post_status' clause depends on the current user.
	if ( is_user_logged_in() ) {
		$user_id = get_current_user_id();

		$post_type_object = get_post_type_object( $post->post_type );
		if ( empty( $post_type_object ) ) {
			$post_type_cap    = $post->post_type;
			$read_private_cap = 'read_private_' . $post_type_cap . 's';
		} else {
			$read_private_cap = $post_type_object->cap->read_private_posts;
		}

		/*
		 * Results should include private posts belonging to the current user, or private posts where the
		 * current user has the 'read_private_posts' cap.
		 */
		$private_states = get_post_stati( array( 'private' => true ) );
		$where         .= " AND ( p.post_status = 'publish'";
		foreach ( $private_states as $state ) {
			if ( current_user_can( $read_private_cap ) ) {
				$where .= $wpdb->prepare( ' OR p.post_status = %s', $state );
			} else {
				$where .= $wpdb->prepare( ' OR (p.post_author = %d AND p.post_status = %s)', $user_id, $state );
			}
		}
		$where .= ' )';
	} else {
		$where .= " AND p.post_status = 'publish'";
	}

	$op    = $previous ? '<' : '>';
	$order = $previous ? 'DESC' : 'ASC';

	/**
	 * Filters the JOIN clause in the SQL for an adjacent post query.
	 *
	 * The dynamic portion of the hook name, `$adjacent`, refers to the type
	 * of adjacency, 'next' or 'previous'.
	 *
	 * Possible hook names include:
	 *
	 *  - `get_next_post_join`
	 *  - `get_previous_post_join`
	 *
	 * @since 2.5.0
	 * @since 4.4.0 Added the `$taxonomy` and `$post` parameters.
	 *
	 * @param string  $join           The JOIN clause in the SQL.
	 * @param bool    $in_same_term   Whether post should be in a same taxonomy term.
	 * @param array   $excluded_terms Array of excluded term IDs.
	 * @param string  $taxonomy       Taxonomy. Used to identify the term used when `$in_same_term` is true.
	 * @param WP_Post $post           WP_Post object.
	 */
	$join = apply_filters( "get_{$adjacent}_post_join", $join, $in_same_term, $excluded_terms, $taxonomy, $post );

	/**
	 * Filters the WHERE clause in the SQL for an adjacent post query.
	 *
	 * The dynamic portion of the hook name, `$adjacent`, refers to the type
	 * of adjacency, 'next' or 'previous'.
	 *
	 * Possible hook names include:
	 *
	 *  - `get_next_post_where`
	 *  - `get_previous_post_where`
	 *
	 * @since 2.5.0
	 * @since 4.4.0 Added the `$taxonomy` and `$post` parameters.
	 *
	 * @param string  $where          The `WHERE` clause in the SQL.
	 * @param bool    $in_same_term   Whether post should be in a same taxonomy term.
	 * @param array   $excluded_terms Array of excluded term IDs.
	 * @param string  $taxonomy       Taxonomy. Used to identify the term used when `$in_same_term` is true.
	 * @param WP_Post $post           WP_Post object.
	 */
	$where = apply_filters( "get_{$adjacent}_post_where", $wpdb->prepare( "WHERE p.post_date $op %s AND p.post_type = %s $where", $current_post_date, $post->post_type ), $in_same_term, $excluded_terms, $taxonomy, $post );

	/**
	 * Filters the ORDER BY clause in the SQL for an adjacent post query.
	 *
	 * The dynamic portion of the hook name, `$adjacent`, refers to the type
	 * of adjacency, 'next' or 'previous'.
	 *
	 * Possible hook names include:
	 *
	 *  - `get_next_post_sort`
	 *  - `get_previous_post_sort`
	 *
	 * @since 2.5.0
	 * @since 4.4.0 Added the `$post` parameter.
	 * @since 4.9.0 Added the `$order` parameter.
	 *
	 * @param string $order_by The `ORDER BY` clause in the SQL.
	 * @param WP_Post $post    WP_Post object.
	 * @param string  $order   Sort order. 'DESC' for previous post, 'ASC' for next.
	 */
	$sort = apply_filters( "get_{$adjacent}_post_sort", "ORDER BY p.post_date $order LIMIT 1", $post, $order );

	$query     = "SELECT p.ID FROM $wpdb->posts AS p $join $where $sort";
	$query_key = 'adjacent_post_' . md5( $query );
	$result    = wp_cache_get( $query_key, 'counts' );
	if ( false !== $result ) {
		if ( $result ) {
			$result = get_post( $result );
		}
		return $result;
	}

	$result = $wpdb->get_var( $query );
	if ( null === $result ) {
		$result = '';
	}

	wp_cache_set( $query_key, $result, 'counts' );

	if ( $result ) {
		$result = get_post( $result );
	}

	return $result;
}

/**
 * Retrieves the adjacent post relational link.
 *
 * Can either be next or previous post relational link.
 *
 * @since 2.8.0
 *
 * @param string       $title          Optional. Link title format. Default '%title'.
 * @param bool         $in_same_term   Optional. Whether link should be in a same taxonomy term. Default false.
 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty.
 * @param bool         $previous       Optional. Whether to display link to previous or next post. Default true.
 * @param string       $taxonomy       Optional. Taxonomy, if $in_same_term is true. Default 'category'.
 * @return string|void The adjacent post relational link URL.
 */
function get_adjacent_post_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) {
	$post = get_post();
	if ( $previous && is_attachment() && $post ) {
		$post = get_post( $post->post_parent );
	} else {
		$post = get_adjacent_post( $in_same_term, $excluded_terms, $previous, $taxonomy );
	}

	if ( empty( $post ) ) {
		return;
	}

	$post_title = the_title_attribute(
		array(
			'echo' => false,
			'post' => $post,
		)
	);

	if ( empty( $post_title ) ) {
		$post_title = $previous ? __( 'Previous Post' ) : __( 'Next Post' );
	}

	$date = mysql2date( get_option( 'date_format' ), $post->post_date );

	$title = str_replace( '%title', $post_title, $title );
	$title = str_replace( '%date', $date, $title );

	$link  = $previous ? "<link rel='prev' title='" : "<link rel='next' title='";
	$link .= esc_attr( $title );
	$link .= "' href='" . get_permalink( $post ) . "' />\n";

	$adjacent = $previous ? 'previous' : 'next';

	/**
	 * Filters the adjacent post relational link.
	 *
	 * The dynamic portion of the hook name, `$adjacent`, refers to the type
	 * of adjacency, 'next' or 'previous'.
	 *
	 * Possible hook names include:
	 *
	 *  - `next_post_rel_link`
	 *  - `previous_post_rel_link`
	 *
	 * @since 2.8.0
	 *
	 * @param string $link The relational link.
	 */
	return apply_filters( "{$adjacent}_post_rel_link", $link );
}

/**
 * Displays the relational links for the posts adjacent to the current post.
 *
 * @since 2.8.0
 *
 * @param string       $title          Optional. Link title format. Default '%title'.
 * @param bool         $in_same_term   Optional. Whether link should be in a same taxonomy term. Default false.
 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty.
 * @param string       $taxonomy       Optional. Taxonomy, if $in_same_term is true. Default 'category'.
 */
function adjacent_posts_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
	echo get_adjacent_post_rel_link( $title, $in_same_term, $excluded_terms, true, $taxonomy );
	echo get_adjacent_post_rel_link( $title, $in_same_term, $excluded_terms, false, $taxonomy );
}

/**
 * Displays relational links for the posts adjacent to the current post for single post pages.
 *
 * This is meant to be attached to actions like 'wp_head'. Do not call this directly in plugins
 * or theme templates.
 *
 * @since 3.0.0
 * @since 5.6.0 No longer used in core.
 *
 * @see adjacent_posts_rel_link()
 */
function adjacent_posts_rel_link_wp_head() {
	if ( ! is_single() || is_attachment() ) {
		return;
	}
	adjacent_posts_rel_link();
}

/**
 * Displays the relational link for the next post adjacent to the current post.
 *
 * @since 2.8.0
 *
 * @see get_adjacent_post_rel_link()
 *
 * @param string       $title          Optional. Link title format. Default '%title'.
 * @param bool         $in_same_term   Optional. Whether link should be in a same taxonomy term. Default false.
 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty.
 * @param string       $taxonomy       Optional. Taxonomy, if $in_same_term is true. Default 'category'.
 */
function next_post_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
	echo get_adjacent_post_rel_link( $title, $in_same_term, $excluded_terms, false, $taxonomy );
}

/**
 * Displays the relational link for the previous post adjacent to the current post.
 *
 * @since 2.8.0
 *
 * @see get_adjacent_post_rel_link()
 *
 * @param string       $title          Optional. Link title format. Default '%title'.
 * @param bool         $in_same_term   Optional. Whether link should be in a same taxonomy term. Default false.
 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default true.
 * @param string       $taxonomy       Optional. Taxonomy, if $in_same_term is true. Default 'category'.
 */
function prev_post_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
	echo get_adjacent_post_rel_link( $title, $in_same_term, $excluded_terms, true, $taxonomy );
}

/**
 * Retrieves the boundary post.
 *
 * Boundary being either the first or last post by publish date within the constraints specified
 * by $in_same_term or $excluded_terms.
 *
 * @since 2.8.0
 *
 * @param bool         $in_same_term   Optional. Whether returned post should be in a same taxonomy term.
 *                                     Default false.
 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs.
 *                                     Default empty.
 * @param bool         $start          Optional. Whether to retrieve first or last post. Default true
 * @param string       $taxonomy       Optional. Taxonomy, if $in_same_term is true. Default 'category'.
 * @return null|array Array containing the boundary post object if successful, null otherwise.
 */
function get_boundary_post( $in_same_term = false, $excluded_terms = '', $start = true, $taxonomy = 'category' ) {
	$post = get_post();
	if ( ! $post || ! is_single() || is_attachment() || ! taxonomy_exists( $taxonomy ) ) {
		return null;
	}

	$query_args = array(
		'posts_per_page'         => 1,
		'order'                  => $start ? 'ASC' : 'DESC',
		'update_post_term_cache' => false,
		'update_post_meta_cache' => false,
	);

	$term_array = array();

	if ( ! is_array( $excluded_terms ) ) {
		if ( ! empty( $excluded_terms ) ) {
			$excluded_terms = explode( ',', $excluded_terms );
		} else {
			$excluded_terms = array();
		}
	}

	if ( $in_same_term || ! empty( $excluded_terms ) ) {
		if ( $in_same_term ) {
			$term_array = wp_get_object_terms( $post->ID, $taxonomy, array( 'fields' => 'ids' ) );
		}

		if ( ! empty( $excluded_terms ) ) {
			$excluded_terms = array_map( 'intval', $excluded_terms );
			$excluded_terms = array_diff( $excluded_terms, $term_array );

			$inverse_terms = array();
			foreach ( $excluded_terms as $excluded_term ) {
				$inverse_terms[] = $excluded_term * -1;
			}
			$excluded_terms = $inverse_terms;
		}

		$query_args['tax_query'] = array(
			array(
				'taxonomy' => $taxonomy,
				'terms'    => array_merge( $term_array, $excluded_terms ),
			),
		);
	}

	return get_posts( $query_args );
}

/**
 * Retrieves the previous post link that is adjacent to the current post.
 *
 * @since 3.7.0
 *
 * @param string       $format         Optional. Link anchor format. Default '&laquo; %link'.
 * @param string       $link           Optional. Link permalink format. Default '%title'.
 * @param bool         $in_same_term   Optional. Whether link should be in a same taxonomy term. Default false.
 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty.
 * @param string       $taxonomy       Optional. Taxonomy, if $in_same_term is true. Default 'category'.
 * @return string The link URL of the previous post in relation to the current post.
 */
function get_previous_post_link( $format = '&laquo; %link', $link = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
	return get_adjacent_post_link( $format, $link, $in_same_term, $excluded_terms, true, $taxonomy );
}

/**
 * Displays the previous post link that is adjacent to the current post.
 *
 * @since 1.5.0
 *
 * @see get_previous_post_link()
 *
 * @param string       $format         Optional. Link anchor format. Default '&laquo; %link'.
 * @param string       $link           Optional. Link permalink format. Default '%title'.
 * @param bool         $in_same_term   Optional. Whether link should be in a same taxonomy term. Default false.
 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty.
 * @param string       $taxonomy       Optional. Taxonomy, if $in_same_term is true. Default 'category'.
 */
function previous_post_link( $format = '&laquo; %link', $link = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
	echo get_previous_post_link( $format, $link, $in_same_term, $excluded_terms, $taxonomy );
}

/**
 * Retrieves the next post link that is adjacent to the current post.
 *
 * @since 3.7.0
 *
 * @param string       $format         Optional. Link anchor format. Default '&laquo; %link'.
 * @param string       $link           Optional. Link permalink format. Default '%title'.
 * @param bool         $in_same_term   Optional. Whether link should be in a same taxonomy term. Default false.
 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty.
 * @param string       $taxonomy       Optional. Taxonomy, if $in_same_term is true. Default 'category'.
 * @return string The link URL of the next post in relation to the current post.
 */
function get_next_post_link( $format = '%link &raquo;', $link = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
	return get_adjacent_post_link( $format, $link, $in_same_term, $excluded_terms, false, $taxonomy );
}

/**
 * Displays the next post link that is adjacent to the current post.
 *
 * @since 1.5.0
 *
 * @see get_next_post_link()
 *
 * @param string       $format         Optional. Link anchor format. Default '&laquo; %link'.
 * @param string       $link           Optional. Link permalink format. Default '%title'
 * @param bool         $in_same_term   Optional. Whether link should be in a same taxonomy term. Default false.
 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty.
 * @param string       $taxonomy       Optional. Taxonomy, if $in_same_term is true. Default 'category'.
 */
function next_post_link( $format = '%link &raquo;', $link = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
	echo get_next_post_link( $format, $link, $in_same_term, $excluded_terms, $taxonomy );
}

/**
 * Retrieves the adjacent post link.
 *
 * Can be either next post link or previous.
 *
 * @since 3.7.0
 *
 * @param string       $format         Link anchor format.
 * @param string       $link           Link permalink format.
 * @param bool         $in_same_term   Optional. Whether link should be in a same taxonomy term. Default false.
 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded terms IDs. Default empty.
 * @param bool         $previous       Optional. Whether to display link to previous or next post. Default true.
 * @param string       $taxonomy       Optional. Taxonomy, if $in_same_term is true. Default 'category'.
 * @return string The link URL of the previous or next post in relation to the current post.
 */
function get_adjacent_post_link( $format, $link, $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) {
	if ( $previous && is_attachment() ) {
		$post = get_post( get_post()->post_parent );
	} else {
		$post = get_adjacent_post( $in_same_term, $excluded_terms, $previous, $taxonomy );
	}

	if ( ! $post ) {
		$output = '';
	} else {
		$title = $post->post_title;

		if ( empty( $post->post_title ) ) {
			$title = $previous ? __( 'Previous Post' ) : __( 'Next Post' );
		}

		/** This filter is documented in wp-includes/post-template.php */
		$title = apply_filters( 'the_title', $title, $post->ID );

		$date = mysql2date( get_option( 'date_format' ), $post->post_date );
		$rel  = $previous ? 'prev' : 'next';

		$string = '<a href="' . get_permalink( $post ) . '" rel="' . $rel . '">';
		$inlink = str_replace( '%title', $title, $link );
		$inlink = str_replace( '%date', $date, $inlink );
		$inlink = $string . $inlink . '</a>';

		$output = str_replace( '%link', $inlink, $format );
	}

	$adjacent = $previous ? 'previous' : 'next';

	/**
	 * Filters the adjacent post link.
	 *
	 * The dynamic portion of the hook name, `$adjacent`, refers to the type
	 * of adjacency, 'next' or 'previous'.
	 *
	 * Possible hook names include:
	 *
	 *  - `next_post_link`
	 *  - `previous_post_link`
	 *
	 * @since 2.6.0
	 * @since 4.2.0 Added the `$adjacent` parameter.
	 *
	 * @param string  $output   The adjacent post link.
	 * @param string  $format   Link anchor format.
	 * @param string  $link     Link permalink format.
	 * @param WP_Post $post     The adjacent post.
	 * @param string  $adjacent Whether the post is previous or next.
	 */
	return apply_filters( "{$adjacent}_post_link", $output, $format, $link, $post, $adjacent );
}

/**
 * Displays the adjacent post link.
 *
 * Can be either next post link or previous.
 *
 * @since 2.5.0
 *
 * @param string       $format         Link anchor format.
 * @param string       $link           Link permalink format.
 * @param bool         $in_same_term   Optional. Whether link should be in a same taxonomy term. Default false.
 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded category IDs. Default empty.
 * @param bool         $previous       Optional. Whether to display link to previous or next post. Default true.
 * @param string       $taxonomy       Optional. Taxonomy, if $in_same_term is true. Default 'category'.
 */
function adjacent_post_link( $format, $link, $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) {
	echo get_adjacent_post_link( $format, $link, $in_same_term, $excluded_terms, $previous, $taxonomy );
}

/**
 * Retrieves the link for a page number.
 *
 * @since 1.5.0
 *
 * @global WP_Rewrite $wp_rewrite WordPress rewrite component.
 *
 * @param int  $pagenum Optional. Page number. Default 1.
 * @param bool $escape  Optional. Whether to escape the URL for display, with esc_url(). Defaults to true.
 *                      Otherwise, prepares the URL with esc_url_raw().
 * @return string The link URL for the given page number.
 */
function get_pagenum_link( $pagenum = 1, $escape = true ) {
	global $wp_rewrite;

	$pagenum = (int) $pagenum;

	$request = remove_query_arg( 'paged' );

	$home_root = parse_url( home_url() );
	$home_root = ( isset( $home_root['path'] ) ) ? $home_root['path'] : '';
	$home_root = preg_quote( $home_root, '|' );

	$request = preg_replace( '|^' . $home_root . '|i', '', $request );
	$request = preg_replace( '|^/+|', '', $request );

	if ( ! $wp_rewrite->using_permalinks() || is_admin() ) {
		$base = trailingslashit( get_bloginfo( 'url' ) );

		if ( $pagenum > 1 ) {
			$result = add_query_arg( 'paged', $pagenum, $base . $request );
		} else {
			$result = $base . $request;
		}
	} else {
		$qs_regex = '|\?.*?$|';
		preg_match( $qs_regex, $request, $qs_match );

		if ( ! empty( $qs_match[0] ) ) {
			$query_string = $qs_match[0];
			$request      = preg_replace( $qs_regex, '', $request );
		} else {
			$query_string = '';
		}

		$request = preg_replace( "|$wp_rewrite->pagination_base/\d+/?$|", '', $request );
		$request = preg_replace( '|^' . preg_quote( $wp_rewrite->index, '|' ) . '|i', '', $request );
		$request = ltrim( $request, '/' );

		$base = trailingslashit( get_bloginfo( 'url' ) );

		if ( $wp_rewrite->using_index_permalinks() && ( $pagenum > 1 || '' !== $request ) ) {
			$base .= $wp_rewrite->index . '/';
		}

		if ( $pagenum > 1 ) {
			$request = ( ( ! empty( $request ) ) ? trailingslashit( $request ) : $request ) . user_trailingslashit( $wp_rewrite->pagination_base . '/' . $pagenum, 'paged' );
		}

		$result = $base . $request . $query_string;
	}

	/**
	 * Filters the page number link for the current request.
	 *
	 * @since 2.5.0
	 * @since 5.2.0 Added the `$pagenum` argument.
	 *
	 * @param string $result  The page number link.
	 * @param int    $pagenum The page number.
	 */
	$result = apply_filters( 'get_pagenum_link', $result, $pagenum );

	if ( $escape ) {
		return esc_url( $result );
	} else {
		return esc_url_raw( $result );
	}
}

/**
 * Retrieves the next posts page link.
 *
 * Backported from 2.1.3 to 2.0.10.
 *
 * @since 2.0.10
 *
 * @global int $paged
 *
 * @param int $max_page Optional. Max pages. Default 0.
 * @return string|void The link URL for next posts page.
 */
function get_next_posts_page_link( $max_page = 0 ) {
	global $paged;

	if ( ! is_single() ) {
		if ( ! $paged ) {
			$paged = 1;
		}
		$nextpage = (int) $paged + 1;
		if ( ! $max_page || $max_page >= $nextpage ) {
			return get_pagenum_link( $nextpage );
		}
	}
}

/**
 * Displays or retrieves the next posts page link.
 *
 * @since 0.71
 *
 * @param int  $max_page Optional. Max pages. Default 0.
 * @param bool $echo     Optional. Whether to echo the link. Default true.
 * @return string|void The link URL for next posts page if `$echo = false`.
 */
function next_posts( $max_page = 0, $echo = true ) {
	$output = esc_url( get_next_posts_page_link( $max_page ) );

	if ( $echo ) {
		echo $output;
	} else {
		return $output;
	}
}

/**
 * Retrieves the next posts page link.
 *
 * @since 2.7.0
 *
 * @global int      $paged
 * @global WP_Query $wp_query WordPress Query object.
 *
 * @param string $label    Content for link text.
 * @param int    $max_page Optional. Max pages. Default 0.
 * @return string|void HTML-formatted next posts page link.
 */
function get_next_posts_link( $label = null, $max_page = 0 ) {
	global $paged, $wp_query;

	if ( ! $max_page ) {
		$max_page = $wp_query->max_num_pages;
	}

	if ( ! $paged ) {
		$paged = 1;
	}

	$nextpage = (int) $paged + 1;

	if ( null === $label ) {
		$label = __( 'Next Page &raquo;' );
	}

	if ( ! is_single() && ( $nextpage <= $max_page ) ) {
		/**
		 * Filters the anchor tag attributes for the next posts page link.
		 *
		 * @since 2.7.0
		 *
		 * @param string $attributes Attributes for the anchor tag.
		 */
		$attr = apply_filters( 'next_posts_link_attributes', '' );

		return '<a href="' . next_posts( $max_page, false ) . "\" $attr>" . preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&#038;$1', $label ) . '</a>';
	}
}

/**
 * Displays the next posts page link.
 *
 * @since 0.71
 *
 * @param string $label    Content for link text.
 * @param int    $max_page Optional. Max pages. Default 0.
 */
function next_posts_link( $label = null, $max_page = 0 ) {
	echo get_next_posts_link( $label, $max_page );
}

/**
 * Retrieves the previous posts page link.
 *
 * Will only return string, if not on a single page or post.
 *
 * Backported to 2.0.10 from 2.1.3.
 *
 * @since 2.0.10
 *
 * @global int $paged
 *
 * @return string|void The link for the previous posts page.
 */
function get_previous_posts_page_link() {
	global $paged;

	if ( ! is_single() ) {
		$nextpage = (int) $paged - 1;
		if ( $nextpage < 1 ) {
			$nextpage = 1;
		}
		return get_pagenum_link( $nextpage );
	}
}

/**
 * Displays or retrieves the previous posts page link.
 *
 * @since 0.71
 *
 * @param bool $echo Optional. Whether to echo the link. Default true.
 * @return string|void The previous posts page link if `$echo = false`.
 */
function previous_posts( $echo = true ) {
	$output = esc_url( get_previous_posts_page_link() );

	if ( $echo ) {
		echo $output;
	} else {
		return $output;
	}
}

/**
 * Retrieves the previous posts page link.
 *
 * @since 2.7.0
 *
 * @global int $paged
 *
 * @param string $label Optional. Previous page link text.
 * @return string|void HTML-formatted previous page link.
 */
function get_previous_posts_link( $label = null ) {
	global $paged;

	if ( null === $label ) {
		$label = __( '&laquo; Previous Page' );
	}

	if ( ! is_single() && $paged > 1 ) {
		/**
		 * Filters the anchor tag attributes for the previous posts page link.
		 *
		 * @since 2.7.0
		 *
		 * @param string $attributes Attributes for the anchor tag.
		 */
		$attr = apply_filters( 'previous_posts_link_attributes', '' );
		return '<a href="' . previous_posts( false ) . "\" $attr>" . preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&#038;$1', $label ) . '</a>';
	}
}

/**
 * Displays the previous posts page link.
 *
 * @since 0.71
 *
 * @param string $label Optional. Previous page link text.
 */
function previous_posts_link( $label = null ) {
	echo get_previous_posts_link( $label );
}

/**
 * Retrieves the post pages link navigation for previous and next pages.
 *
 * @since 2.8.0
 *
 * @global WP_Query $wp_query WordPress Query object.
 *
 * @param string|array $args {
 *     Optional. Arguments to build the post pages link navigation.
 *
 *     @type string $sep      Separator character. Default '&#8212;'.
 *     @type string $prelabel Link text to display for the previous page link.
 *                            Default '&laquo; Previous Page'.
 *     @type string $nxtlabel Link text to display for the next page link.
 *                            Default 'Next Page &raquo;'.
 * }
 * @return string The posts link navigation.
 */
function get_posts_nav_link( $args = array() ) {
	global $wp_query;

	$return = '';

	if ( ! is_singular() ) {
		$defaults = array(
			'sep'      => ' &#8212; ',
			'prelabel' => __( '&laquo; Previous Page' ),
			'nxtlabel' => __( 'Next Page &raquo;' ),
		);
		$args     = wp_parse_args( $args, $defaults );

		$max_num_pages = $wp_query->max_num_pages;
		$paged         = get_query_var( 'paged' );

		// Only have sep if there's both prev and next results.
		if ( $paged < 2 || $paged >= $max_num_pages ) {
			$args['sep'] = '';
		}

		if ( $max_num_pages > 1 ) {
			$return  = get_previous_posts_link( $args['prelabel'] );
			$return .= preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&#038;$1', $args['sep'] );
			$return .= get_next_posts_link( $args['nxtlabel'] );
		}
	}
	return $return;

}

/**
 * Displays the post pages link navigation for previous and next pages.
 *
 * @since 0.71
 *
 * @param string $sep      Optional. Separator for posts navigation links. Default empty.
 * @param string $prelabel Optional. Label for previous pages. Default empty.
 * @param string $nxtlabel Optional Label for next pages. Default empty.
 */
function posts_nav_link( $sep = '', $prelabel = '', $nxtlabel = '' ) {
	$args = array_filter( compact( 'sep', 'prelabel', 'nxtlabel' ) );
	echo get_posts_nav_link( $args );
}

/**
 * Retrieves the navigation to next/previous post, when applicable.
 *
 * @since 4.1.0
 * @since 4.4.0 Introduced the `in_same_term`, `excluded_terms`, and `taxonomy` arguments.
 * @since 5.3.0 Added the `aria_label` parameter.
 * @since 5.5.0 Added the `class` parameter.
 *
 * @param array $args {
 *     Optional. Default post navigation arguments. Default empty array.
 *
 *     @type string       $prev_text          Anchor text to display in the previous post link. Default '%title'.
 *     @type string       $next_text          Anchor text to display in the next post link. Default '%title'.
 *     @type bool         $in_same_term       Whether link should be in a same taxonomy term. Default false.
 *     @type int[]|string $excluded_terms     Array or comma-separated list of excluded term IDs. Default empty.
 *     @type string       $taxonomy           Taxonomy, if `$in_same_term` is true. Default 'category'.
 *     @type string       $screen_reader_text Screen reader text for the nav element. Default 'Post navigation'.
 *     @type string       $aria_label         ARIA label text for the nav element. Default 'Posts'.
 *     @type string       $class              Custom class for the nav element. Default 'post-navigation'.
 * }
 * @return string Markup for post links.
 */
function get_the_post_navigation( $args = array() ) {
	// Make sure the nav element has an aria-label attribute: fallback to the screen reader text.
	if ( ! empty( $args['screen_reader_text'] ) && empty( $args['aria_label'] ) ) {
		$args['aria_label'] = $args['screen_reader_text'];
	}

	$args = wp_parse_args(
		$args,
		array(
			'prev_text'          => '%title',
			'next_text'          => '%title',
			'in_same_term'       => false,
			'excluded_terms'     => '',
			'taxonomy'           => 'category',
			'screen_reader_text' => __( 'Post navigation' ),
			'aria_label'         => __( 'Posts' ),
			'class'              => 'post-navigation',
		)
	);

	$navigation = '';

	$previous = get_previous_post_link(
		'<div class="nav-previous">%link</div>',
		$args['prev_text'],
		$args['in_same_term'],
		$args['excluded_terms'],
		$args['taxonomy']
	);

	$next = get_next_post_link(
		'<div class="nav-next">%link</div>',
		$args['next_text'],
		$args['in_same_term'],
		$args['excluded_terms'],
		$args['taxonomy']
	);

	// Only add markup if there's somewhere to navigate to.
	if ( $previous || $next ) {
		$navigation = _navigation_markup( $previous . $next, $args['class'], $args['screen_reader_text'], $args['aria_label'] );
	}

	return $navigation;
}

/**
 * Displays the navigation to next/previous post, when applicable.
 *
 * @since 4.1.0
 *
 * @param array $args Optional. See get_the_post_navigation() for available arguments.
 *                    Default empty array.
 */
function the_post_navigation( $args = array() ) {
	echo get_the_post_navigation( $args );
}

/**
 * Returns the navigation to next/previous set of posts, when applicable.
 *
 * @since 4.1.0
 * @since 5.3.0 Added the `aria_label` parameter.
 * @since 5.5.0 Added the `class` parameter.
 *
 * @global WP_Query $wp_query WordPress Query object.
 *
 * @param array $args {
 *     Optional. Default posts navigation arguments. Default empty array.
 *
 *     @type string $prev_text          Anchor text to display in the previous posts link.
 *                                      Default 'Older posts'.
 *     @type string $next_text          Anchor text to display in the next posts link.
 *                                      Default 'Newer posts'.
 *     @type string $screen_reader_text Screen reader text for the nav element.
 *                                      Default 'Posts navigation'.
 *     @type string $aria_label         ARIA label text for the nav element. Default 'Posts'.
 *     @type string $class              Custom class for the nav element. Default 'posts-navigation'.
 * }
 * @return string Markup for posts links.
 */
function get_the_posts_navigation( $args = array() ) {
	$navigation = '';

	// Don't print empty markup if there's only one page.
	if ( $GLOBALS['wp_query']->max_num_pages > 1 ) {
		// Make sure the nav element has an aria-label attribute: fallback to the screen reader text.
		if ( ! empty( $args['screen_reader_text'] ) && empty( $args['aria_label'] ) ) {
			$args['aria_label'] = $args['screen_reader_text'];
		}

		$args = wp_parse_args(
			$args,
			array(
				'prev_text'          => __( 'Older posts' ),
				'next_text'          => __( 'Newer posts' ),
				'screen_reader_text' => __( 'Posts navigation' ),
				'aria_label'         => __( 'Posts' ),
				'class'              => 'posts-navigation',
			)
		);

		$next_link = get_previous_posts_link( $args['next_text'] );
		$prev_link = get_next_posts_link( $args['prev_text'] );

		if ( $prev_link ) {
			$navigation .= '<div class="nav-previous">' . $prev_link . '</div>';
		}

		if ( $next_link ) {
			$navigation .= '<div class="nav-next">' . $next_link . '</div>';
		}

		$navigation = _navigation_markup( $navigation, $args['class'], $args['screen_reader_text'], $args['aria_label'] );
	}

	return $navigation;
}

/**
 * Displays the navigation to next/previous set of posts, when applicable.
 *
 * @since 4.1.0
 *
 * @param array $args Optional. See get_the_posts_navigation() for available arguments.
 *                    Default empty array.
 */
function the_posts_navigation( $args = array() ) {
	echo get_the_posts_navigation( $args );
}

/**
 * Retrieves a paginated navigation to next/previous set of posts, when applicable.
 *
 * @since 4.1.0
 * @since 5.3.0 Added the `aria_label` parameter.
 * @since 5.5.0 Added the `class` parameter.
 *
 * @param array $args {
 *     Optional. Default pagination arguments, see paginate_links().
 *
 *     @type string $screen_reader_text Screen reader text for navigation element.
 *                                      Default 'Posts navigation'.
 *     @type string $aria_label         ARIA label text for the nav element. Default 'Posts'.
 *     @type string $class              Custom class for the nav element. Default 'pagination'.
 * }
 * @return string Markup for pagination links.
 */
function get_the_posts_pagination( $args = array() ) {
	$navigation = '';

	// Don't print empty markup if there's only one page.
	if ( $GLOBALS['wp_query']->max_num_pages > 1 ) {
		// Make sure the nav element has an aria-label attribute: fallback to the screen reader text.
		if ( ! empty( $args['screen_reader_text'] ) && empty( $args['aria_label'] ) ) {
			$args['aria_label'] = $args['screen_reader_text'];
		}

		$args = wp_parse_args(
			$args,
			array(
				'mid_size'           => 1,
				'prev_text'          => _x( 'Previous', 'previous set of posts' ),
				'next_text'          => _x( 'Next', 'next set of posts' ),
				'screen_reader_text' => __( 'Posts navigation' ),
				'aria_label'         => __( 'Posts' ),
				'class'              => 'pagination',
			)
		);

		// Make sure we get a string back. Plain is the next best thing.
		if ( isset( $args['type'] ) && 'array' === $args['type'] ) {
			$args['type'] = 'plain';
		}

		// Set up paginated links.
		$links = paginate_links( $args );

		if ( $links ) {
			$navigation = _navigation_markup( $links, $args['class'], $args['screen_reader_text'], $args['aria_label'] );
		}
	}

	return $navigation;
}

/**
 * Displays a paginated navigation to next/previous set of posts, when applicable.
 *
 * @since 4.1.0
 *
 * @param array $args Optional. See get_the_posts_pagination() for available arguments.
 *                    Default empty array.
 */
function the_posts_pagination( $args = array() ) {
	echo get_the_posts_pagination( $args );
}

/**
 * Wraps passed links in navigational markup.
 *
 * @since 4.1.0
 * @since 5.3.0 Added the `aria_label` parameter.
 * @access private
 *
 * @param string $links              Navigational links.
 * @param string $class              Optional. Custom class for the nav element.
 *                                   Default 'posts-navigation'.
 * @param string $screen_reader_text Optional. Screen reader text for the nav element.
 *                                   Default 'Posts navigation'.
 * @param string $aria_label         Optional. ARIA label for the nav element.
 *                                   Defaults to the value of `$screen_reader_text`.
 * @return string Navigation template tag.
 */
function _navigation_markup( $links, $class = 'posts-navigation', $screen_reader_text = '', $aria_label = '' ) {
	if ( empty( $screen_reader_text ) ) {
		$screen_reader_text = __( 'Posts navigation' );
	}
	if ( empty( $aria_label ) ) {
		$aria_label = $screen_reader_text;
	}

	$template = '
	<nav class="navigation %1$s" aria-label="%4$s">
		<h2 class="screen-reader-text">%2$s</h2>
		<div class="nav-links">%3$s</div>
	</nav>';

	/**
	 * Filters the navigation markup template.
	 *
	 * Note: The filtered template HTML must contain specifiers for the navigation
	 * class (%1$s), the screen-reader-text value (%2$s), placement of the navigation
	 * links (%3$s), and ARIA label text if screen-reader-text does not fit that (%4$s):
	 *
	 *     <nav class="navigation %1$s" aria-label="%4$s">
	 *         <h2 class="screen-reader-text">%2$s</h2>
	 *         <div class="nav-links">%3$s</div>
	 *     </nav>
	 *
	 * @since 4.4.0
	 *
	 * @param string $template The default template.
	 * @param string $class    The class passed by the calling function.
	 * @return string Navigation template.
	 */
	$template = apply_filters( 'navigation_markup_template', $template, $class );

	return sprintf( $template, sanitize_html_class( $class ), esc_html( $screen_reader_text ), $links, esc_html( $aria_label ) );
}

/**
 * Retrieves the comments page number link.
 *
 * @since 2.7.0
 *
 * @global WP_Rewrite $wp_rewrite WordPress rewrite component.
 *
 * @param int $pagenum  Optional. Page number. Default 1.
 * @param int $max_page Optional. The maximum number of comment pages. Default 0.
 * @return string The comments page number link URL.
 */
function get_comments_pagenum_link( $pagenum = 1, $max_page = 0 ) {
	global $wp_rewrite;

	$pagenum = (int) $pagenum;

	$result = get_permalink();

	if ( 'newest' === get_option( 'default_comments_page' ) ) {
		if ( $pagenum != $max_page ) {
			if ( $wp_rewrite->using_permalinks() ) {
				$result = user_trailingslashit( trailingslashit( $result ) . $wp_rewrite->comments_pagination_base . '-' . $pagenum, 'commentpaged' );
			} else {
				$result = add_query_arg( 'cpage', $pagenum, $result );
			}
		}
	} elseif ( $pagenum > 1 ) {
		if ( $wp_rewrite->using_permalinks() ) {
			$result = user_trailingslashit( trailingslashit( $result ) . $wp_rewrite->comments_pagination_base . '-' . $pagenum, 'commentpaged' );
		} else {
			$result = add_query_arg( 'cpage', $pagenum, $result );
		}
	}

	$result .= '#comments';

	/**
	 * Filters the comments page number link for the current request.
	 *
	 * @since 2.7.0
	 *
	 * @param string $result The comments page number link.
	 */
	return apply_filters( 'get_comments_pagenum_link', $result );
}

/**
 * Retrieves the link to the next comments page.
 *
 * @since 2.7.1
 *
 * @global WP_Query $wp_query WordPress Query object.
 *
 * @param string $label    Optional. Label for link text. Default empty.
 * @param int    $max_page Optional. Max page. Default 0.
 * @return string|void HTML-formatted link for the next page of comments.
 */
function get_next_comments_link( $label = '', $max_page = 0 ) {
	global $wp_query;

	if ( ! is_singular() ) {
		return;
	}

	$page = get_query_var( 'cpage' );

	if ( ! $page ) {
		$page = 1;
	}

	$nextpage = (int) $page + 1;

	if ( empty( $max_page ) ) {
		$max_page = $wp_query->max_num_comment_pages;
	}

	if ( empty( $max_page ) ) {
		$max_page = get_comment_pages_count();
	}

	if ( $nextpage > $max_page ) {
		return;
	}

	if ( empty( $label ) ) {
		$label = __( 'Newer Comments &raquo;' );
	}

	/**
	 * Filters the anchor tag attributes for the next comments page link.
	 *
	 * @since 2.7.0
	 *
	 * @param string $attributes Attributes for the anchor tag.
	 */
	return '<a href="' . esc_url( get_comments_pagenum_link( $nextpage, $max_page ) ) . '" ' . apply_filters( 'next_comments_link_attributes', '' ) . '>' . preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&#038;$1', $label ) . '</a>';
}

/**
 * Displays the link to the next comments page.
 *
 * @since 2.7.0
 *
 * @param string $label    Optional. Label for link text. Default empty.
 * @param int    $max_page Optional. Max page. Default 0.
 */
function next_comments_link( $label = '', $max_page = 0 ) {
	echo get_next_comments_link( $label, $max_page );
}

/**
 * Retrieves the link to the previous comments page.
 *
 * @since 2.7.1
 *
 * @param string $label Optional. Label for comments link text. Default empty.
 * @return string|void HTML-formatted link for the previous page of comments.
 */
function get_previous_comments_link( $label = '' ) {
	if ( ! is_singular() ) {
		return;
	}

	$page = get_query_var( 'cpage' );

	if ( (int) $page <= 1 ) {
		return;
	}

	$prevpage = (int) $page - 1;

	if ( empty( $label ) ) {
		$label = __( '&laquo; Older Comments' );
	}

	/**
	 * Filters the anchor tag attributes for the previous comments page link.
	 *
	 * @since 2.7.0
	 *
	 * @param string $attributes Attributes for the anchor tag.
	 */
	return '<a href="' . esc_url( get_comments_pagenum_link( $prevpage ) ) . '" ' . apply_filters( 'previous_comments_link_attributes', '' ) . '>' . preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&#038;$1', $label ) . '</a>';
}

/**
 * Displays the link to the previous comments page.
 *
 * @since 2.7.0
 *
 * @param string $label Optional. Label for comments link text. Default empty.
 */
function previous_comments_link( $label = '' ) {
	echo get_previous_comments_link( $label );
}

/**
 * Displays or retrieves pagination links for the comments on the current post.
 *
 * @see paginate_links()
 * @since 2.7.0
 *
 * @global WP_Rewrite $wp_rewrite WordPress rewrite component.
 *
 * @param string|array $args Optional args. See paginate_links(). Default empty array.
 * @return void|string|array Void if 'echo' argument is true and 'type' is not an array,
 *                           or if the query is not for an existing single post of any post type.
 *                           Otherwise, markup for comment page links or array of comment page links,
 *                           depending on 'type' argument.
 */
function paginate_comments_links( $args = array() ) {
	global $wp_rewrite;

	if ( ! is_singular() ) {
		return;
	}

	$page = get_query_var( 'cpage' );
	if ( ! $page ) {
		$page = 1;
	}
	$max_page = get_comment_pages_count();
	$defaults = array(
		'base'         => add_query_arg( 'cpage', '%#%' ),
		'format'       => '',
		'total'        => $max_page,
		'current'      => $page,
		'echo'         => true,
		'type'         => 'plain',
		'add_fragment' => '#comments',
	);
	if ( $wp_rewrite->using_permalinks() ) {
		$defaults['base'] = user_trailingslashit( trailingslashit( get_permalink() ) . $wp_rewrite->comments_pagination_base . '-%#%', 'commentpaged' );
	}

	$args       = wp_parse_args( $args, $defaults );
	$page_links = paginate_links( $args );

	if ( $args['echo'] && 'array' !== $args['type'] ) {
		echo $page_links;
	} else {
		return $page_links;
	}
}

/**
 * Retrieves navigation to next/previous set of comments, when applicable.
 *
 * @since 4.4.0
 * @since 5.3.0 Added the `aria_label` parameter.
 * @since 5.5.0 Added the `class` parameter.
 *
 * @param array $args {
 *     Optional. Default comments navigation arguments.
 *
 *     @type string $prev_text          Anchor text to display in the previous comments link.
 *                                      Default 'Older comments'.
 *     @type string $next_text          Anchor text to display in the next comments link.
 *                                      Default 'Newer comments'.
 *     @type string $screen_reader_text Screen reader text for the nav element. Default 'Comments navigation'.
 *     @type string $aria_label         ARIA label text for the nav element. Default 'Comments'.
 *     @type string $class              Custom class for the nav element. Default 'comment-navigation'.
 * }
 * @return string Markup for comments links.
 */
function get_the_comments_navigation( $args = array() ) {
	$navigation = '';

	// Are there comments to navigate through?
	if ( get_comment_pages_count() > 1 ) {
		// Make sure the nav element has an aria-label attribute: fallback to the screen reader text.
		if ( ! empty( $args['screen_reader_text'] ) && empty( $args['aria_label'] ) ) {
			$args['aria_label'] = $args['screen_reader_text'];
		}

		$args = wp_parse_args(
			$args,
			array(
				'prev_text'          => __( 'Older comments' ),
				'next_text'          => __( 'Newer comments' ),
				'screen_reader_text' => __( 'Comments navigation' ),
				'aria_label'         => __( 'Comments' ),
				'class'              => 'comment-navigation',
			)
		);

		$prev_link = get_previous_comments_link( $args['prev_text'] );
		$next_link = get_next_comments_link( $args['next_text'] );

		if ( $prev_link ) {
			$navigation .= '<div class="nav-previous">' . $prev_link . '</div>';
		}

		if ( $next_link ) {
			$navigation .= '<div class="nav-next">' . $next_link . '</div>';
		}

		$navigation = _navigation_markup( $navigation, $args['class'], $args['screen_reader_text'], $args['aria_label'] );
	}

	return $navigation;
}

/**
 * Displays navigation to next/previous set of comments, when applicable.
 *
 * @since 4.4.0
 *
 * @param array $args See get_the_comments_navigation() for available arguments. Default empty array.
 */
function the_comments_navigation( $args = array() ) {
	echo get_the_comments_navigation( $args );
}

/**
 * Retrieves a paginated navigation to next/previous set of comments, when applicable.
 *
 * @since 4.4.0
 * @since 5.3.0 Added the `aria_label` parameter.
 * @since 5.5.0 Added the `class` parameter.
 *
 * @see paginate_comments_links()
 *
 * @param array $args {
 *     Optional. Default pagination arguments.
 *
 *     @type string $screen_reader_text Screen reader text for the nav element. Default 'Comments navigation'.
 *     @type string $aria_label         ARIA label text for the nav element. Default 'Comments'.
 *     @type string $class              Custom class for the nav element. Default 'comments-pagination'.
 * }
 * @return string Markup for pagination links.
 */
function get_the_comments_pagination( $args = array() ) {
	$navigation = '';

	// Make sure the nav element has an aria-label attribute: fallback to the screen reader text.
	if ( ! empty( $args['screen_reader_text'] ) && empty( $args['aria_label'] ) ) {
		$args['aria_label'] = $args['screen_reader_text'];
	}

	$args         = wp_parse_args(
		$args,
		array(
			'screen_reader_text' => __( 'Comments navigation' ),
			'aria_label'         => __( 'Comments' ),
			'class'              => 'comments-pagination',
		)
	);
	$args['echo'] = false;

	// Make sure we get a string back. Plain is the next best thing.
	if ( isset( $args['type'] ) && 'array' === $args['type'] ) {
		$args['type'] = 'plain';
	}

	$links = paginate_comments_links( $args );

	if ( $links ) {
		$navigation = _navigation_markup( $links, $args['class'], $args['screen_reader_text'], $args['aria_label'] );
	}

	return $navigation;
}

/**
 * Displays a paginated navigation to next/previous set of comments, when applicable.
 *
 * @since 4.4.0
 *
 * @param array $args See get_the_comments_pagination() for available arguments. Default empty array.
 */
function the_comments_pagination( $args = array() ) {
	echo get_the_comments_pagination( $args );
}

/**
 * Retrieves the URL for the current site where the front end is accessible.
 *
 * Returns the 'home' option with the appropriate protocol. The protocol will be 'https'
 * if is_ssl() evaluates to true; otherwise, it will be the same as the 'home' option.
 * If `$scheme` is 'http' or 'https', is_ssl() is overridden.
 *
 * @since 3.0.0
 *
 * @param string      $path   Optional. Path relative to the home URL. Default empty.
 * @param string|null $scheme Optional. Scheme to give the home URL context. Accepts
 *                            'http', 'https', 'relative', 'rest', or null. Default null.
 * @return string Home URL link with optional path appended.
 */
function home_url( $path = '', $scheme = null ) {
	return get_home_url( null, $path, $scheme );
}

/**
 * Retrieves the URL for a given site where the front end is accessible.
 *
 * Returns the 'home' option with the appropriate protocol. The protocol will be 'https'
 * if is_ssl() evaluates to true; otherwise, it will be the same as the 'home' option.
 * If `$scheme` is 'http' or 'https', is_ssl() is overridden.
 *
 * @since 3.0.0
 *
 * @param int|null    $blog_id Optional. Site ID. Default null (current site).
 * @param string      $path    Optional. Path relative to the home URL. Default empty.
 * @param string|null $scheme  Optional. Scheme to give the home URL context. Accepts
 *                             'http', 'https', 'relative', 'rest', or null. Default null.
 * @return string Home URL link with optional path appended.
 */
function get_home_url( $blog_id = null, $path = '', $scheme = null ) {
	$orig_scheme = $scheme;

	if ( empty( $blog_id ) || ! is_multisite() ) {
		$url = get_option( 'home' );
	} else {
		switch_to_blog( $blog_id );
		$url = get_option( 'home' );
		restore_current_blog();
	}

	if ( ! in_array( $scheme, array( 'http', 'https', 'relative' ), true ) ) {
		if ( is_ssl() ) {
			$scheme = 'https';
		} else {
			$scheme = parse_url( $url, PHP_URL_SCHEME );
		}
	}

	$url = set_url_scheme( $url, $scheme );

	if ( $path && is_string( $path ) ) {
		$url .= '/' . ltrim( $path, '/' );
	}

	/**
	 * Filters the home URL.
	 *
	 * @since 3.0.0
	 *
	 * @param string      $url         The complete home URL including scheme and path.
	 * @param string      $path        Path relative to the home URL. Blank string if no path is specified.
	 * @param string|null $orig_scheme Scheme to give the home URL context. Accepts 'http', 'https',
	 *                                 'relative', 'rest', or null.
	 * @param int|null    $blog_id     Site ID, or null for the current site.
	 */
	return apply_filters( 'home_url', $url, $path, $orig_scheme, $blog_id );
}

/**
 * Retrieves the URL for the current site where WordPress application files
 * (e.g. wp-blog-header.php or the wp-admin/ folder) are accessible.
 *
 * Returns the 'site_url' option with the appropriate protocol, 'https' if
 * is_ssl() and 'http' otherwise. If $scheme is 'http' or 'https', is_ssl() is
 * overridden.
 *
 * @since 3.0.0
 *
 * @param string      $path   Optional. Path relative to the site URL. Default empty.
 * @param string|null $scheme Optional. Scheme to give the site URL context. See set_url_scheme().
 * @return string Site URL link with optional path appended.
 */
function site_url( $path = '', $scheme = null ) {
	return get_site_url( null, $path, $scheme );
}

/**
 * Retrieves the URL for a given site where WordPress application files
 * (e.g. wp-blog-header.php or the wp-admin/ folder) are accessible.
 *
 * Returns the 'site_url' option with the appropriate protocol, 'https' if
 * is_ssl() and 'http' otherwise. If `$scheme` is 'http' or 'https',
 * `is_ssl()` is overridden.
 *
 * @since 3.0.0
 *
 * @param int|null    $blog_id Optional. Site ID. Default null (current site).
 * @param string      $path    Optional. Path relative to the site URL. Default empty.
 * @param string|null $scheme  Optional. Scheme to give the site URL context. Accepts
 *                             'http', 'https', 'login', 'login_post', 'admin', or
 *                             'relative'. Default null.
 * @return string Site URL link with optional path appended.
 */
function get_site_url( $blog_id = null, $path = '', $scheme = null ) {
	if ( empty( $blog_id ) || ! is_multisite() ) {
		$url = get_option( 'siteurl' );
	} else {
		switch_to_blog( $blog_id );
		$url = get_option( 'siteurl' );
		restore_current_blog();
	}

	$url = set_url_scheme( $url, $scheme );

	if ( $path && is_string( $path ) ) {
		$url .= '/' . ltrim( $path, '/' );
	}

	/**
	 * Filters the site URL.
	 *
	 * @since 2.7.0
	 *
	 * @param string      $url     The complete site URL including scheme and path.
	 * @param string      $path    Path relative to the site URL. Blank string if no path is specified.
	 * @param string|null $scheme  Scheme to give the site URL context. Accepts 'http', 'https', 'login',
	 *                             'login_post', 'admin', 'relative' or null.
	 * @param int|null    $blog_id Site ID, or null for the current site.
	 */
	return apply_filters( 'site_url', $url, $path, $scheme, $blog_id );
}

/**
 * Retrieves the URL to the admin area for the current site.
 *
 * @since 2.6.0
 *
 * @param string $path   Optional. Path relative to the admin URL. Default 'admin'.
 * @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() and is_ssl().
 *                       'http' or 'https' can be passed to force those schemes.
 * @return string Admin URL link with optional path appended.
 */
function admin_url( $path = '', $scheme = 'admin' ) {
	return get_admin_url( null, $path, $scheme );
}

/**
 * Retrieves the URL to the admin area for a given site.
 *
 * @since 3.0.0
 *
 * @param int|null $blog_id Optional. Site ID. Default null (current site).
 * @param string   $path    Optional. Path relative to the admin URL. Default empty.
 * @param string   $scheme  Optional. The scheme to use. Accepts 'http' or 'https',
 *                          to force those schemes. Default 'admin', which obeys
 *                          force_ssl_admin() and is_ssl().
 * @return string Admin URL link with optional path appended.
 */
function get_admin_url( $blog_id = null, $path = '', $scheme = 'admin' ) {
	$url = get_site_url( $blog_id, 'wp-admin/', $scheme );

	if ( $path && is_string( $path ) ) {
		$url .= ltrim( $path, '/' );
	}

	/**
	 * Filters the admin area URL.
	 *
	 * @since 2.8.0
	 * @since 5.8.0 The `$scheme` parameter was added.
	 *
	 * @param string      $url     The complete admin area URL including scheme and path.
	 * @param string      $path    Path relative to the admin area URL. Blank string if no path is specified.
	 * @param int|null    $blog_id Site ID, or null for the current site.
	 * @param string|null $scheme  The scheme to use. Accepts 'http', 'https',
	 *                             'admin', or null. Default 'admin', which obeys force_ssl_admin() and is_ssl().
	 */
	return apply_filters( 'admin_url', $url, $path, $blog_id, $scheme );
}

/**
 * Retrieves the URL to the includes directory.
 *
 * @since 2.6.0
 *
 * @param string      $path   Optional. Path relative to the includes URL. Default empty.
 * @param string|null $scheme Optional. Scheme to give the includes URL context. Accepts
 *                            'http', 'https', or 'relative'. Default null.
 * @return string Includes URL link with optional path appended.
 */
function includes_url( $path = '', $scheme = null ) {
	$url = site_url( '/' . WPINC . '/', $scheme );

	if ( $path && is_string( $path ) ) {
		$url .= ltrim( $path, '/' );
	}

	/**
	 * Filters the URL to the includes directory.
	 *
	 * @since 2.8.0
	 * @since 5.8.0 The `$scheme` parameter was added.
	 *
	 * @param string      $url    The complete URL to the includes directory including scheme and path.
	 * @param string      $path   Path relative to the URL to the wp-includes directory. Blank string
	 *                            if no path is specified.
	 * @param string|null $scheme Scheme to give the includes URL context. Accepts
	 *                            'http', 'https', 'relative', or null. Default null.
	 */
	return apply_filters( 'includes_url', $url, $path, $scheme );
}

/**
 * Retrieves the URL to the content directory.
 *
 * @since 2.6.0
 *
 * @param string $path Optional. Path relative to the content URL. Default empty.
 * @return string Content URL link with optional path appended.
 */
function content_url( $path = '' ) {
	$url = set_url_scheme( WP_CONTENT_URL );

	if ( $path && is_string( $path ) ) {
		$url .= '/' . ltrim( $path, '/' );
	}

	/**
	 * Filters the URL to the content directory.
	 *
	 * @since 2.8.0
	 *
	 * @param string $url  The complete URL to the content directory including scheme and path.
	 * @param string $path Path relative to the URL to the content directory. Blank string
	 *                     if no path is specified.
	 */
	return apply_filters( 'content_url', $url, $path );
}

/**
 * Retrieves a URL within the plugins or mu-plugins directory.
 *
 * Defaults to the plugins directory URL if no arguments are supplied.
 *
 * @since 2.6.0
 *
 * @param string $path   Optional. Extra path appended to the end of the URL, including
 *                       the relative directory if $plugin is supplied. Default empty.
 * @param string $plugin Optional. A full path to a file inside a plugin or mu-plugin.
 *                       The URL will be relative to its directory. Default empty.
 *                       Typically this is done by passing `__FILE__` as the argument.
 * @return string Plugins URL link with optional paths appended.
 */
function plugins_url( $path = '', $plugin = '' ) {

	$path          = wp_normalize_path( $path );
	$plugin        = wp_normalize_path( $plugin );
	$mu_plugin_dir = wp_normalize_path( WPMU_PLUGIN_DIR );

	if ( ! empty( $plugin ) && 0 === strpos( $plugin, $mu_plugin_dir ) ) {
		$url = WPMU_PLUGIN_URL;
	} else {
		$url = WP_PLUGIN_URL;
	}

	$url = set_url_scheme( $url );

	if ( ! empty( $plugin ) && is_string( $plugin ) ) {
		$folder = dirname( plugin_basename( $plugin ) );
		if ( '.' !== $folder ) {
			$url .= '/' . ltrim( $folder, '/' );
		}
	}

	if ( $path && is_string( $path ) ) {
		$url .= '/' . ltrim( $path, '/' );
	}

	/**
	 * Filters the URL to the plugins directory.
	 *
	 * @since 2.8.0
	 *
	 * @param string $url    The complete URL to the plugins directory including scheme and path.
	 * @param string $path   Path relative to the URL to the plugins directory. Blank string
	 *                       if no path is specified.
	 * @param string $plugin The plugin file path to be relative to. Blank string if no plugin
	 *                       is specified.
	 */
	return apply_filters( 'plugins_url', $url, $path, $plugin );
}

/**
 * Retrieves the site URL for the current network.
 *
 * Returns the site URL with the appropriate protocol, 'https' if
 * is_ssl() and 'http' otherwise. If $scheme is 'http' or 'https', is_ssl() is
 * overridden.
 *
 * @since 3.0.0
 *
 * @see set_url_scheme()
 *
 * @param string      $path   Optional. Path relative to the site URL. Default empty.
 * @param string|null $scheme Optional. Scheme to give the site URL context. Accepts
 *                            'http', 'https', or 'relative'. Default null.
 * @return string Site URL link with optional path appended.
 */
function network_site_url( $path = '', $scheme = null ) {
	if ( ! is_multisite() ) {
		return site_url( $path, $scheme );
	}

	$current_network = get_network();

	if ( 'relative' === $scheme ) {
		$url = $current_network->path;
	} else {
		$url = set_url_scheme( 'http://' . $current_network->domain . $current_network->path, $scheme );
	}

	if ( $path && is_string( $path ) ) {
		$url .= ltrim( $path, '/' );
	}

	/**
	 * Filters the network site URL.
	 *
	 * @since 3.0.0
	 *
	 * @param string      $url    The complete network site URL including scheme and path.
	 * @param string      $path   Path relative to the network site URL. Blank string if
	 *                            no path is specified.
	 * @param string|null $scheme Scheme to give the URL context. Accepts 'http', 'https',
	 *                            'relative' or null.
	 */
	return apply_filters( 'network_site_url', $url, $path, $scheme );
}

/**
 * Retrieves the home URL for the current network.
 *
 * Returns the home URL with the appropriate protocol, 'https' is_ssl()
 * and 'http' otherwise. If `$scheme` is 'http' or 'https', `is_ssl()` is
 * overridden.
 *
 * @since 3.0.0
 *
 * @param string      $path   Optional. Path relative to the home URL. Default empty.
 * @param string|null $scheme Optional. Scheme to give the home URL context. Accepts
 *                            'http', 'https', or 'relative'. Default null.
 * @return string Home URL link with optional path appended.
 */
function network_home_url( $path = '', $scheme = null ) {
	if ( ! is_multisite() ) {
		return home_url( $path, $scheme );
	}

	$current_network = get_network();
	$orig_scheme     = $scheme;

	if ( ! in_array( $scheme, array( 'http', 'https', 'relative' ), true ) ) {
		$scheme = is_ssl() ? 'https' : 'http';
	}

	if ( 'relative' === $scheme ) {
		$url = $current_network->path;
	} else {
		$url = set_url_scheme( 'http://' . $current_network->domain . $current_network->path, $scheme );
	}

	if ( $path && is_string( $path ) ) {
		$url .= ltrim( $path, '/' );
	}

	/**
	 * Filters the network home URL.
	 *
	 * @since 3.0.0
	 *
	 * @param string      $url         The complete network home URL including scheme and path.
	 * @param string      $path        Path relative to the network home URL. Blank string
	 *                                 if no path is specified.
	 * @param string|null $orig_scheme Scheme to give the URL context. Accepts 'http', 'https',
	 *                                 'relative' or null.
	 */
	return apply_filters( 'network_home_url', $url, $path, $orig_scheme );
}

/**
 * Retrieves the URL to the admin area for the network.
 *
 * @since 3.0.0
 *
 * @param string $path   Optional path relative to the admin URL. Default empty.
 * @param string $scheme Optional. The scheme to use. Default is 'admin', which obeys force_ssl_admin()
 *                       and is_ssl(). 'http' or 'https' can be passed to force those schemes.
 * @return string Admin URL link with optional path appended.
 */
function network_admin_url( $path = '', $scheme = 'admin' ) {
	if ( ! is_multisite() ) {
		return admin_url( $path, $scheme );
	}

	$url = network_site_url( 'wp-admin/network/', $scheme );

	if ( $path && is_string( $path ) ) {
		$url .= ltrim( $path, '/' );
	}

	/**
	 * Filters the network admin URL.
	 *
	 * @since 3.0.0
	 * @since 5.8.0 The `$scheme` parameter was added.
	 *
	 * @param string      $url    The complete network admin URL including scheme and path.
	 * @param string      $path   Path relative to the network admin URL. Blank string if
	 *                            no path is specified.
	 * @param string|null $scheme The scheme to use. Accepts 'http', 'https',
	 *                            'admin', or null. Default is 'admin', which obeys force_ssl_admin() and is_ssl().
	 */
	return apply_filters( 'network_admin_url', $url, $path, $scheme );
}

/**
 * Retrieves the URL to the admin area for the current user.
 *
 * @since 3.0.0
 *
 * @param string $path   Optional. Path relative to the admin URL. Default empty.
 * @param string $scheme Optional. The scheme to use. Default is 'admin', which obeys force_ssl_admin()
 *                       and is_ssl(). 'http' or 'https' can be passed to force those schemes.
 * @return string Admin URL link with optional path appended.
 */
function user_admin_url( $path = '', $scheme = 'admin' ) {
	$url = network_site_url( 'wp-admin/user/', $scheme );

	if ( $path && is_string( $path ) ) {
		$url .= ltrim( $path, '/' );
	}

	/**
	 * Filters the user admin URL for the current user.
	 *
	 * @since 3.1.0
	 * @since 5.8.0 The `$scheme` parameter was added.
	 *
	 * @param string      $url    The complete URL including scheme and path.
	 * @param string      $path   Path relative to the URL. Blank string if
	 *                            no path is specified.
	 * @param string|null $scheme The scheme to use. Accepts 'http', 'https',
	 *                            'admin', or null. Default is 'admin', which obeys force_ssl_admin() and is_ssl().
	 */
	return apply_filters( 'user_admin_url', $url, $path, $scheme );
}

/**
 * Retrieves the URL to the admin area for either the current site or the network depending on context.
 *
 * @since 3.1.0
 *
 * @param string $path   Optional. Path relative to the admin URL. Default empty.
 * @param string $scheme Optional. The scheme to use. Default is 'admin', which obeys force_ssl_admin()
 *                       and is_ssl(). 'http' or 'https' can be passed to force those schemes.
 * @return string Admin URL link with optional path appended.
 */
function self_admin_url( $path = '', $scheme = 'admin' ) {
	if ( is_network_admin() ) {
		$url = network_admin_url( $path, $scheme );
	} elseif ( is_user_admin() ) {
		$url = user_admin_url( $path, $scheme );
	} else {
		$url = admin_url( $path, $scheme );
	}

	/**
	 * Filters the admin URL for the current site or network depending on context.
	 *
	 * @since 4.9.0
	 *
	 * @param string $url    The complete URL including scheme and path.
	 * @param string $path   Path relative to the URL. Blank string if no path is specified.
	 * @param string $scheme The scheme to use.
	 */
	return apply_filters( 'self_admin_url', $url, $path, $scheme );
}

/**
 * Sets the scheme for a URL.
 *
 * @since 3.4.0
 * @since 4.4.0 The 'rest' scheme was added.
 *
 * @param string      $url    Absolute URL that includes a scheme
 * @param string|null $scheme Optional. Scheme to give $url. Currently 'http', 'https', 'login',
 *                            'login_post', 'admin', 'relative', 'rest', 'rpc', or null. Default null.
 * @return string URL with chosen scheme.
 */
function set_url_scheme( $url, $scheme = null ) {
	$orig_scheme = $scheme;

	if ( ! $scheme ) {
		$scheme = is_ssl() ? 'https' : 'http';
	} elseif ( 'admin' === $scheme || 'login' === $scheme || 'login_post' === $scheme || 'rpc' === $scheme ) {
		$scheme = is_ssl() || force_ssl_admin() ? 'https' : 'http';
	} elseif ( 'http' !== $scheme && 'https' !== $scheme && 'relative' !== $scheme ) {
		$scheme = is_ssl() ? 'https' : 'http';
	}

	$url = trim( $url );
	if ( substr( $url, 0, 2 ) === '//' ) {
		$url = 'http:' . $url;
	}

	if ( 'relative' === $scheme ) {
		$url = ltrim( preg_replace( '#^\w+://[^/]*#', '', $url ) );
		if ( '' !== $url && '/' === $url[0] ) {
			$url = '/' . ltrim( $url, "/ \t\n\r\0\x0B" );
		}
	} else {
		$url = preg_replace( '#^\w+://#', $scheme . '://', $url );
	}

	/**
	 * Filters the resulting URL after setting the scheme.
	 *
	 * @since 3.4.0
	 *
	 * @param string      $url         The complete URL including scheme and path.
	 * @param string      $scheme      Scheme applied to the URL. One of 'http', 'https', or 'relative'.
	 * @param string|null $orig_scheme Scheme requested for the URL. One of 'http', 'https', 'login',
	 *                                 'login_post', 'admin', 'relative', 'rest', 'rpc', or null.
	 */
	return apply_filters( 'set_url_scheme', $url, $scheme, $orig_scheme );
}

/**
 * Retrieves the URL to the user's dashboard.
 *
 * If a user does not belong to any site, the global user dashboard is used. If the user
 * belongs to the current site, the dashboard for the current site is returned. If the user
 * cannot edit the current site, the dashboard to the user's primary site is returned.
 *
 * @since 3.1.0
 *
 * @param int    $user_id Optional. User ID. Defaults to current user.
 * @param string $path    Optional path relative to the dashboard. Use only paths known to
 *                        both site and user admins. Default empty.
 * @param string $scheme  The scheme to use. Default is 'admin', which obeys force_ssl_admin()
 *                        and is_ssl(). 'http' or 'https' can be passed to force those schemes.
 * @return string Dashboard URL link with optional path appended.
 */
function get_dashboard_url( $user_id = 0, $path = '', $scheme = 'admin' ) {
	$user_id = $user_id ? (int) $user_id : get_current_user_id();

	$blogs = get_blogs_of_user( $user_id );

	if ( is_multisite() && ! user_can( $user_id, 'manage_network' ) && empty( $blogs ) ) {
		$url = user_admin_url( $path, $scheme );
	} elseif ( ! is_multisite() ) {
		$url = admin_url( $path, $scheme );
	} else {
		$current_blog = get_current_blog_id();

		if ( $current_blog && ( user_can( $user_id, 'manage_network' ) || in_array( $current_blog, array_keys( $blogs ), true ) ) ) {
			$url = admin_url( $path, $scheme );
		} else {
			$active = get_active_blog_for_user( $user_id );
			if ( $active ) {
				$url = get_admin_url( $active->blog_id, $path, $scheme );
			} else {
				$url = user_admin_url( $path, $scheme );
			}
		}
	}

	/**
	 * Filters the dashboard URL for a user.
	 *
	 * @since 3.1.0
	 *
	 * @param string $url     The complete URL including scheme and path.
	 * @param int    $user_id The user ID.
	 * @param string $path    Path relative to the URL. Blank string if no path is specified.
	 * @param string $scheme  Scheme to give the URL context. Accepts 'http', 'https', 'login',
	 *                        'login_post', 'admin', 'relative' or null.
	 */
	return apply_filters( 'user_dashboard_url', $url, $user_id, $path, $scheme );
}

/**
 * Retrieves the URL to the user's profile editor.
 *
 * @since 3.1.0
 *
 * @param int    $user_id Optional. User ID. Defaults to current user.
 * @param string $scheme  Optional. The scheme to use. Default is 'admin', which obeys force_ssl_admin()
 *                        and is_ssl(). 'http' or 'https' can be passed to force those schemes.
 * @return string Dashboard URL link with optional path appended.
 */
function get_edit_profile_url( $user_id = 0, $scheme = 'admin' ) {
	$user_id = $user_id ? (int) $user_id : get_current_user_id();

	if ( is_user_admin() ) {
		$url = user_admin_url( 'profile.php', $scheme );
	} elseif ( is_network_admin() ) {
		$url = network_admin_url( 'profile.php', $scheme );
	} else {
		$url = get_dashboard_url( $user_id, 'profile.php', $scheme );
	}

	/**
	 * Filters the URL for a user's profile editor.
	 *
	 * @since 3.1.0
	 *
	 * @param string $url     The complete URL including scheme and path.
	 * @param int    $user_id The user ID.
	 * @param string $scheme  Scheme to give the URL context. Accepts 'http', 'https', 'login',
	 *                        'login_post', 'admin', 'relative' or null.
	 */
	return apply_filters( 'edit_profile_url', $url, $user_id, $scheme );
}

/**
 * Returns the canonical URL for a post.
 *
 * When the post is the same as the current requested page the function will handle the
 * pagination arguments too.
 *
 * @since 4.6.0
 *
 * @param int|WP_Post $post Optional. Post ID or object. Default is global `$post`.
 * @return string|false The canonical URL, or false if the post does not exist or has not
 *                      been published yet.
 */
function wp_get_canonical_url( $post = null ) {
	$post = get_post( $post );

	if ( ! $post ) {
		return false;
	}

	if ( 'publish' !== $post->post_status ) {
		return false;
	}

	$canonical_url = get_permalink( $post );

	// If a canonical is being generated for the current page, make sure it has pagination if needed.
	if ( get_queried_object_id() === $post->ID ) {
		$page = get_query_var( 'page', 0 );
		if ( $page >= 2 ) {
			if ( ! get_option( 'permalink_structure' ) ) {
				$canonical_url = add_query_arg( 'page', $page, $canonical_url );
			} else {
				$canonical_url = trailingslashit( $canonical_url ) . user_trailingslashit( $page, 'single_paged' );
			}
		}

		$cpage = get_query_var( 'cpage', 0 );
		if ( $cpage ) {
			$canonical_url = get_comments_pagenum_link( $cpage );
		}
	}

	/**
	 * Filters the canonical URL for a post.
	 *
	 * @since 4.6.0
	 *
	 * @param string  $canonical_url The post's canonical URL.
	 * @param WP_Post $post          Post object.
	 */
	return apply_filters( 'get_canonical_url', $canonical_url, $post );
}

/**
 * Outputs rel=canonical for singular queries.
 *
 * @since 2.9.0
 * @since 4.6.0 Adjusted to use `wp_get_canonical_url()`.
 */
function rel_canonical() {
	if ( ! is_singular() ) {
		return;
	}

	$id = get_queried_object_id();

	if ( 0 === $id ) {
		return;
	}

	$url = wp_get_canonical_url( $id );

	if ( ! empty( $url ) ) {
		echo '<link rel="canonical" href="' . esc_url( $url ) . '" />' . "\n";
	}
}

/**
 * Returns a shortlink for a post, page, attachment, or site.
 *
 * This function exists to provide a shortlink tag that all themes and plugins can target.
 * A plugin must hook in to provide the actual shortlinks. Default shortlink support is
 * limited to providing ?p= style links for posts. Plugins can short-circuit this function
 * via the {@see 'pre_get_shortlink'} filter or filter the output via the {@see 'get_shortlink'}
 * filter.
 *
 * @since 3.0.0
 *
 * @param int    $id          Optional. A post or site ID. Default is 0, which means the current post or site.
 * @param string $context     Optional. Whether the ID is a 'site' ID, 'post' ID, or 'media' ID. If 'post',
 *                            the post_type of the post is consulted. If 'query', the current query is consulted
 *                            to determine the ID and context. Default 'post'.
 * @param bool   $allow_slugs Optional. Whether to allow post slugs in the shortlink. It is up to the plugin how
 *                            and whether to honor this. Default true.
 * @return string A shortlink or an empty string if no shortlink exists for the requested resource or if shortlinks
 *                are not enabled.
 */
function wp_get_shortlink( $id = 0, $context = 'post', $allow_slugs = true ) {
	/**
	 * Filters whether to preempt generating a shortlink for the given post.
	 *
	 * Returning a truthy value from the filter will effectively short-circuit
	 * the shortlink generation process, returning that value instead.
	 *
	 * @since 3.0.0
	 *
	 * @param false|string $return      Short-circuit return value. Either false or a URL string.
	 * @param int          $id          Post ID, or 0 for the current post.
	 * @param string       $context     The context for the link. One of 'post' or 'query',
	 * @param bool         $allow_slugs Whether to allow post slugs in the shortlink.
	 */
	$shortlink = apply_filters( 'pre_get_shortlink', false, $id, $context, $allow_slugs );

	if ( false !== $shortlink ) {
		return $shortlink;
	}

	$post_id = 0;
	if ( 'query' === $context && is_singular() ) {
		$post_id = get_queried_object_id();
		$post    = get_post( $post_id );
	} elseif ( 'post' === $context ) {
		$post = get_post( $id );
		if ( ! empty( $post->ID ) ) {
			$post_id = $post->ID;
		}
	}

	$shortlink = '';

	// Return `?p=` link for all public post types.
	if ( ! empty( $post_id ) ) {
		$post_type = get_post_type_object( $post->post_type );

		if ( 'page' === $post->post_type && get_option( 'page_on_front' ) == $post->ID && 'page' === get_option( 'show_on_front' ) ) {
			$shortlink = home_url( '/' );
		} elseif ( $post_type && $post_type->public ) {
			$shortlink = home_url( '?p=' . $post_id );
		}
	}

	/**
	 * Filters the shortlink for a post.
	 *
	 * @since 3.0.0
	 *
	 * @param string $shortlink   Shortlink URL.
	 * @param int    $id          Post ID, or 0 for the current post.
	 * @param string $context     The context for the link. One of 'post' or 'query',
	 * @param bool   $allow_slugs Whether to allow post slugs in the shortlink. Not used by default.
	 */
	return apply_filters( 'get_shortlink', $shortlink, $id, $context, $allow_slugs );
}

/**
 * Injects rel=shortlink into the head if a shortlink is defined for the current page.
 *
 * Attached to the {@see 'wp_head'} action.
 *
 * @since 3.0.0
 */
function wp_shortlink_wp_head() {
	$shortlink = wp_get_shortlink( 0, 'query' );

	if ( empty( $shortlink ) ) {
		return;
	}

	echo "<link rel='shortlink' href='" . esc_url( $shortlink ) . "' />\n";
}

/**
 * Sends a Link: rel=shortlink header if a shortlink is defined for the current page.
 *
 * Attached to the {@see 'wp'} action.
 *
 * @since 3.0.0
 */
function wp_shortlink_header() {
	if ( headers_sent() ) {
		return;
	}

	$shortlink = wp_get_shortlink( 0, 'query' );

	if ( empty( $shortlink ) ) {
		return;
	}

	header( 'Link: <' . $shortlink . '>; rel=shortlink', false );
}

/**
 * Displays the shortlink for a post.
 *
 * Must be called from inside "The Loop"
 *
 * Call like the_shortlink( __( 'Shortlinkage FTW' ) )
 *
 * @since 3.0.0
 *
 * @param string $text   Optional The link text or HTML to be displayed. Defaults to 'This is the short link.'
 * @param string $title  Optional The tooltip for the link. Must be sanitized. Defaults to the sanitized post title.
 * @param string $before Optional HTML to display before the link. Default empty.
 * @param string $after  Optional HTML to display after the link. Default empty.
 */
function the_shortlink( $text = '', $title = '', $before = '', $after = '' ) {
	$post = get_post();

	if ( empty( $text ) ) {
		$text = __( 'This is the short link.' );
	}

	if ( empty( $title ) ) {
		$title = the_title_attribute( array( 'echo' => false ) );
	}

	$shortlink = wp_get_shortlink( $post->ID );

	if ( ! empty( $shortlink ) ) {
		$link = '<a rel="shortlink" href="' . esc_url( $shortlink ) . '" title="' . $title . '">' . $text . '</a>';

		/**
		 * Filters the short link anchor tag for a post.
		 *
		 * @since 3.0.0
		 *
		 * @param string $link      Shortlink anchor tag.
		 * @param string $shortlink Shortlink URL.
		 * @param string $text      Shortlink's text.
		 * @param string $title     Shortlink's title attribute.
		 */
		$link = apply_filters( 'the_shortlink', $link, $shortlink, $text, $title );
		echo $before, $link, $after;
	}
}


/**
 * Retrieves the avatar URL.
 *
 * @since 4.2.0
 *
 * @param mixed $id_or_email The Gravatar to retrieve a URL for. Accepts a user_id, gravatar md5 hash,
 *                           user email, WP_User object, WP_Post object, or WP_Comment object.
 * @param array $args {
 *     Optional. Arguments to return instead of the default arguments.
 *
 *     @type int    $size           Height and width of the avatar in pixels. Default 96.
 *     @type string $default        URL for the default image or a default type. Accepts '404' (return
 *                                  a 404 instead of a default image), 'retro' (8bit), 'monsterid' (monster),
 *                                  'wavatar' (cartoon face), 'indenticon' (the "quilt"), 'mystery', 'mm',
 *                                  or 'mysteryman' (The Oyster Man), 'blank' (transparent GIF), or
 *                                  'gravatar_default' (the Gravatar logo). Default is the value of the
 *                                  'avatar_default' option, with a fallback of 'mystery'.
 *     @type bool   $force_default  Whether to always show the default image, never the Gravatar. Default false.
 *     @type string $rating         What rating to display avatars up to. Accepts 'G', 'PG', 'R', 'X', and are
 *                                  judged in that order. Default is the value of the 'avatar_rating' option.
 *     @type string $scheme         URL scheme to use. See set_url_scheme() for accepted values.
 *                                  Default null.
 *     @type array  $processed_args When the function returns, the value will be the processed/sanitized $args
 *                                  plus a "found_avatar" guess. Pass as a reference. Default null.
 * }
 * @return string|false The URL of the avatar on success, false on failure.
 */
function get_avatar_url( $id_or_email, $args = null ) {
	$args = get_avatar_data( $id_or_email, $args );
	return $args['url'];
}


/**
 * Check if this comment type allows avatars to be retrieved.
 *
 * @since 5.1.0
 *
 * @param string $comment_type Comment type to check.
 * @return bool Whether the comment type is allowed for retrieving avatars.
 */
function is_avatar_comment_type( $comment_type ) {
	/**
	 * Filters the list of allowed comment types for retrieving avatars.
	 *
	 * @since 3.0.0
	 *
	 * @param array $types An array of content types. Default only contains 'comment'.
	 */
	$allowed_comment_types = apply_filters( 'get_avatar_comment_types', array( 'comment' ) );

	return in_array( $comment_type, (array) $allowed_comment_types, true );
}


/**
 * Retrieves default data about the avatar.
 *
 * @since 4.2.0
 *
 * @param mixed $id_or_email The Gravatar to retrieve. Accepts a user ID, Gravatar MD5 hash,
 *                           user email, WP_User object, WP_Post object, or WP_Comment object.
 * @param array $args {
 *     Optional. Arguments to return instead of the default arguments.
 *
 *     @type int    $size           Height and width of the avatar image file in pixels. Default 96.
 *     @type int    $height         Display height of the avatar in pixels. Defaults to $size.
 *     @type int    $width          Display width of the avatar in pixels. Defaults to $size.
 *     @type string $default        URL for the default image or a default type. Accepts '404' (return
 *                                  a 404 instead of a default image), 'retro' (8bit), 'monsterid' (monster),
 *                                  'wavatar' (cartoon face), 'indenticon' (the "quilt"), 'mystery', 'mm',
 *                                  or 'mysteryman' (The Oyster Man), 'blank' (transparent GIF), or
 *                                  'gravatar_default' (the Gravatar logo). Default is the value of the
 *                                  'avatar_default' option, with a fallback of 'mystery'.
 *     @type bool   $force_default  Whether to always show the default image, never the Gravatar. Default false.
 *     @type string $rating         What rating to display avatars up to. Accepts 'G', 'PG', 'R', 'X', and are
 *                                  judged in that order. Default is the value of the 'avatar_rating' option.
 *     @type string $scheme         URL scheme to use. See set_url_scheme() for accepted values.
 *                                  Default null.
 *     @type array  $processed_args When the function returns, the value will be the processed/sanitized $args
 *                                  plus a "found_avatar" guess. Pass as a reference. Default null.
 *     @type string $extra_attr     HTML attributes to insert in the IMG element. Is not sanitized. Default empty.
 * }
 * @return array {
 *     Along with the arguments passed in `$args`, this will contain a couple of extra arguments.
 *
 *     @type bool   $found_avatar True if we were able to find an avatar for this user,
 *                                false or not set if we couldn't.
 *     @type string $url          The URL of the avatar we found.
 * }
 */
function get_avatar_data( $id_or_email, $args = null ) {
	$args = wp_parse_args(
		$args,
		array(
			'size'           => 96,
			'height'         => null,
			'width'          => null,
			'default'        => get_option( 'avatar_default', 'mystery' ),
			'force_default'  => false,
			'rating'         => get_option( 'avatar_rating' ),
			'scheme'         => null,
			'processed_args' => null, // If used, should be a reference.
			'extra_attr'     => '',
		)
	);

	if ( is_numeric( $args['size'] ) ) {
		$args['size'] = absint( $args['size'] );
		if ( ! $args['size'] ) {
			$args['size'] = 96;
		}
	} else {
		$args['size'] = 96;
	}

	if ( is_numeric( $args['height'] ) ) {
		$args['height'] = absint( $args['height'] );
		if ( ! $args['height'] ) {
			$args['height'] = $args['size'];
		}
	} else {
		$args['height'] = $args['size'];
	}

	if ( is_numeric( $args['width'] ) ) {
		$args['width'] = absint( $args['width'] );
		if ( ! $args['width'] ) {
			$args['width'] = $args['size'];
		}
	} else {
		$args['width'] = $args['size'];
	}

	if ( empty( $args['default'] ) ) {
		$args['default'] = get_option( 'avatar_default', 'mystery' );
	}

	switch ( $args['default'] ) {
		case 'mm':
		case 'mystery':
		case 'mysteryman':
			$args['default'] = 'mm';
			break;
		case 'gravatar_default':
			$args['default'] = false;
			break;
	}

	$args['force_default'] = (bool) $args['force_default'];

	$args['rating'] = strtolower( $args['rating'] );

	$args['found_avatar'] = false;

	/**
	 * Filters whether to retrieve the avatar URL early.
	 *
	 * Passing a non-null value in the 'url' member of the return array will
	 * effectively short circuit get_avatar_data(), passing the value through
	 * the {@see 'get_avatar_data'} filter and returning early.
	 *
	 * @since 4.2.0
	 *
	 * @param array $args        Arguments passed to get_avatar_data(), after processing.
	 * @param mixed $id_or_email The Gravatar to retrieve. Accepts a user ID, Gravatar MD5 hash,
	 *                           user email, WP_User object, WP_Post object, or WP_Comment object.
	 */
	$args = apply_filters( 'pre_get_avatar_data', $args, $id_or_email );

	if ( isset( $args['url'] ) ) {
		/** This filter is documented in wp-includes/link-template.php */
		return apply_filters( 'get_avatar_data', $args, $id_or_email );
	}

	$email_hash = '';
	$user       = false;
	$email      = false;

	if ( is_object( $id_or_email ) && isset( $id_or_email->comment_ID ) ) {
		$id_or_email = get_comment( $id_or_email );
	}

	// Process the user identifier.
	if ( is_numeric( $id_or_email ) ) {
		$user = get_user_by( 'id', absint( $id_or_email ) );
	} elseif ( is_string( $id_or_email ) ) {
		if ( strpos( $id_or_email, '@md5.gravatar.com' ) ) {
			// MD5 hash.
			list( $email_hash ) = explode( '@', $id_or_email );
		} else {
			// Email address.
			$email = $id_or_email;
		}
	} elseif ( $id_or_email instanceof WP_User ) {
		// User object.
		$user = $id_or_email;
	} elseif ( $id_or_email instanceof WP_Post ) {
		// Post object.
		$user = get_user_by( 'id', (int) $id_or_email->post_author );
	} elseif ( $id_or_email instanceof WP_Comment ) {
		if ( ! is_avatar_comment_type( get_comment_type( $id_or_email ) ) ) {
			$args['url'] = false;
			/** This filter is documented in wp-includes/link-template.php */
			return apply_filters( 'get_avatar_data', $args, $id_or_email );
		}

		if ( ! empty( $id_or_email->user_id ) ) {
			$user = get_user_by( 'id', (int) $id_or_email->user_id );
		}
		if ( ( ! $user || is_wp_error( $user ) ) && ! empty( $id_or_email->comment_author_email ) ) {
			$email = $id_or_email->comment_author_email;
		}
	}

	if ( ! $email_hash ) {
		if ( $user ) {
			$email = $user->user_email;
		}

		if ( $email ) {
			$email_hash = md5( strtolower( trim( $email ) ) );
		}
	}

	if ( $email_hash ) {
		$args['found_avatar'] = true;
		$gravatar_server      = hexdec( $email_hash[0] ) % 3;
	} else {
		$gravatar_server = rand( 0, 2 );
	}

	$url_args = array(
		's' => $args['size'],
		'd' => $args['default'],
		'f' => $args['force_default'] ? 'y' : false,
		'r' => $args['rating'],
	);

	if ( is_ssl() ) {
		$url = 'https://secure.gravatar.com/avatar/' . $email_hash;
	} else {
		$url = sprintf( 'http://%d.gravatar.com/avatar/%s', $gravatar_server, $email_hash );
	}

	$url = add_query_arg(
		rawurlencode_deep( array_filter( $url_args ) ),
		set_url_scheme( $url, $args['scheme'] )
	);

	/**
	 * Filters the avatar URL.
	 *
	 * @since 4.2.0
	 *
	 * @param string $url         The URL of the avatar.
	 * @param mixed  $id_or_email The Gravatar to retrieve. Accepts a user ID, Gravatar MD5 hash,
	 *                            user email, WP_User object, WP_Post object, or WP_Comment object.
	 * @param array  $args        Arguments passed to get_avatar_data(), after processing.
	 */
	$args['url'] = apply_filters( 'get_avatar_url', $url, $id_or_email, $args );

	/**
	 * Filters the avatar data.
	 *
	 * @since 4.2.0
	 *
	 * @param array $args        Arguments passed to get_avatar_data(), after processing.
	 * @param mixed $id_or_email The Gravatar to retrieve. Accepts a user ID, Gravatar MD5 hash,
	 *                           user email, WP_User object, WP_Post object, or WP_Comment object.
	 */
	return apply_filters( 'get_avatar_data', $args, $id_or_email );
}

/**
 * Retrieves the URL of a file in the theme.
 *
 * Searches in the stylesheet directory before the template directory so themes
 * which inherit from a parent theme can just override one file.
 *
 * @since 4.7.0
 *
 * @param string $file Optional. File to search for in the stylesheet directory.
 * @return string The URL of the file.
 */
function get_theme_file_uri( $file = '' ) {
	$file = ltrim( $file, '/' );

	if ( empty( $file ) ) {
		$url = get_stylesheet_directory_uri();
	} elseif ( file_exists( get_stylesheet_directory() . '/' . $file ) ) {
		$url = get_stylesheet_directory_uri() . '/' . $file;
	} else {
		$url = get_template_directory_uri() . '/' . $file;
	}

	/**
	 * Filters the URL to a file in the theme.
	 *
	 * @since 4.7.0
	 *
	 * @param string $url  The file URL.
	 * @param string $file The requested file to search for.
	 */
	return apply_filters( 'theme_file_uri', $url, $file );
}

/**
 * Retrieves the URL of a file in the parent theme.
 *
 * @since 4.7.0
 *
 * @param string $file Optional. File to return the URL for in the template directory.
 * @return string The URL of the file.
 */
function get_parent_theme_file_uri( $file = '' ) {
	$file = ltrim( $file, '/' );

	if ( empty( $file ) ) {
		$url = get_template_directory_uri();
	} else {
		$url = get_template_directory_uri() . '/' . $file;
	}

	/**
	 * Filters the URL to a file in the parent theme.
	 *
	 * @since 4.7.0
	 *
	 * @param string $url  The file URL.
	 * @param string $file The requested file to search for.
	 */
	return apply_filters( 'parent_theme_file_uri', $url, $file );
}

/**
 * Retrieves the path of a file in the theme.
 *
 * Searches in the stylesheet directory before the template directory so themes
 * which inherit from a parent theme can just override one file.
 *
 * @since 4.7.0
 *
 * @param string $file Optional. File to search for in the stylesheet directory.
 * @return string The path of the file.
 */
function get_theme_file_path( $file = '' ) {
	$file = ltrim( $file, '/' );

	if ( empty( $file ) ) {
		$path = get_stylesheet_directory();
	} elseif ( file_exists( get_stylesheet_directory() . '/' . $file ) ) {
		$path = get_stylesheet_directory() . '/' . $file;
	} else {
		$path = get_template_directory() . '/' . $file;
	}

	/**
	 * Filters the path to a file in the theme.
	 *
	 * @since 4.7.0
	 *
	 * @param string $path The file path.
	 * @param string $file The requested file to search for.
	 */
	return apply_filters( 'theme_file_path', $path, $file );
}

/**
 * Retrieves the path of a file in the parent theme.
 *
 * @since 4.7.0
 *
 * @param string $file Optional. File to return the path for in the template directory.
 * @return string The path of the file.
 */
function get_parent_theme_file_path( $file = '' ) {
	$file = ltrim( $file, '/' );

	if ( empty( $file ) ) {
		$path = get_template_directory();
	} else {
		$path = get_template_directory() . '/' . $file;
	}

	/**
	 * Filters the path to a file in the parent theme.
	 *
	 * @since 4.7.0
	 *
	 * @param string $path The file path.
	 * @param string $file The requested file to search for.
	 */
	return apply_filters( 'parent_theme_file_path', $path, $file );
}

/**
 * Retrieves the URL to the privacy policy page.
 *
 * @since 4.9.6
 *
 * @return string The URL to the privacy policy page. Empty string if it doesn't exist.
 */
function get_privacy_policy_url() {
	$url            = '';
	$policy_page_id = (int) get_option( 'wp_page_for_privacy_policy' );

	if ( ! empty( $policy_page_id ) && get_post_status( $policy_page_id ) === 'publish' ) {
		$url = (string) get_permalink( $policy_page_id );
	}

	/**
	 * Filters the URL of the privacy policy page.
	 *
	 * @since 4.9.6
	 *
	 * @param string $url            The URL to the privacy policy page. Empty string
	 *                               if it doesn't exist.
	 * @param int    $policy_page_id The ID of privacy policy page.
	 */
	return apply_filters( 'privacy_policy_url', $url, $policy_page_id );
}

/**
 * Displays the privacy policy link with formatting, when applicable.
 *
 * @since 4.9.6
 *
 * @param string $before Optional. Display before privacy policy link. Default empty.
 * @param string $after  Optional. Display after privacy policy link. Default empty.
 */
function the_privacy_policy_link( $before = '', $after = '' ) {
	echo get_the_privacy_policy_link( $before, $after );
}

/**
 * Returns the privacy policy link with formatting, when applicable.
 *
 * @since 4.9.6
 *
 * @param string $before Optional. Display before privacy policy link. Default empty.
 * @param string $after  Optional. Display after privacy policy link. Default empty.
 * @return string Markup for the link and surrounding elements. Empty string if it
 *                doesn't exist.
 */
function get_the_privacy_policy_link( $before = '', $after = '' ) {
	$link               = '';
	$privacy_policy_url = get_privacy_policy_url();
	$policy_page_id     = (int) get_option( 'wp_page_for_privacy_policy' );
	$page_title         = ( $policy_page_id ) ? get_the_title( $policy_page_id ) : '';

	if ( $privacy_policy_url && $page_title ) {
		$link = sprintf(
			'<a class="privacy-policy-link" href="%s">%s</a>',
			esc_url( $privacy_policy_url ),
			esc_html( $page_title )
		);
	}

	/**
	 * Filters the privacy policy link.
	 *
	 * @since 4.9.6
	 *
	 * @param string $link               The privacy policy link. Empty string if it
	 *                                   doesn't exist.
	 * @param string $privacy_policy_url The URL of the privacy policy. Empty string
	 *                                   if it doesn't exist.
	 */
	$link = apply_filters( 'the_privacy_policy_link', $link, $privacy_policy_url );

	if ( $link ) {
		return $before . $link . $after;
	}

	return '';
}