/ We cache misses as well as hits.
	wp_cache_set( $cache_key, $foundid, 'post-queries' );

	if ( $foundid ) {
		return get_post( $foundid, $output );
	}

	return null;
}

/**
 * Identifies descendants of a given page ID in a list of page objects.
 *
 * Descendants are identified from the `$pages` array passed to the function. No database queries are performed.
 *
 * @since 1.5.1
 *
 * @param int       $page_id Page ID.
 * @param WP_Post[] $pages   List of page objects from which descendants should be identified.
 * @return WP_Post[] List of page children.
 */
function get_page_children( $page_id, $pages ) {
	// Build a hash of ID -> children.
	$children = array();
	foreach ( (array) $pages as $page ) {
		$children[ (int) $page->post_parent ][] = $page;
	}

	$page_list = array();

	// Start the search by looking at immediate children.
	if ( isset( $children[ $page_id ] ) ) {
		// Always start at the end of the stack in order to preserve original `$pages` order.
		$to_look = array_reverse( $children[ $page_id ] );

		while ( $to_look ) {
			$p           = array_pop( $to_look );
			$page_list[] = $p;
			if ( isset( $children[ $p->ID ] ) ) {
				foreach ( array_reverse( $children[ $p->ID ] ) as $child ) {
					// Append to the `$to_look` stack to descend the tree.
					$to_look[] = $child;
				}
			}
		}
	}

	return $page_list;
}

/**
 * Orders the pages with children under parents in a flat list.
 *
 * It uses auxiliary structure to hold parent-children relationships and
 * runs in O(N) complexity
 *
 * @since 2.0.0
 *
 * @param WP_Post[] $pages   Posts array (passed by reference).
 * @param int       $page_id Optional. Parent page ID. Default 0.
 * @return string[] Array of post names keyed by ID and arranged by hierarchy. Children immediately follow their parents.
 */
function get_page_hierarchy( &$pages, $page_id = 0 ) {
	if ( empty( $pages ) ) {
		return array();
	}

	$children = array();
	foreach ( (array) $pages as $p ) {
		$parent_id                = (int) $p->post_parent;
		$children[ $parent_id ][] = $p;
	}

	$result = array();
	_page_traverse_name( $page_id, $children, $result );

	return $result;
}

/**
 * Traverses and return all the nested children post names of a root page.
 *
 * $children contains parent-children relations
 *
 * @since 2.9.0
 * @access private
 *
 * @see _page_traverse_name()
 *
 * @param int      $page_id  Page ID.
 * @param array    $children Parent-children relations (passed by reference).
 * @param string[] $result   Array of page names keyed by ID (passed by reference).
 */
function _page_traverse_name( $page_id, &$children, &$result ) {
	if ( isset( $children[ $page_id ] ) ) {
		foreach ( (array) $children[ $page_id ] as $child ) {
			$result[ $child->ID ] = $child->post_name;
			_page_traverse_name( $child->ID, $children, $result );
		}
	}
}

/**
 * Builds the URI path for a page.
 *
 * Sub pages will be in the "directory" under the parent page post name.
 *
 * @since 1.5.0
 * @since 4.6.0 The `$page` parameter was made optional.
 *
 * @param WP_Post|object|int $page Optional. Page ID or WP_Post object. Default is global $post.
 * @return string|false Page URI, false on error.
 */
function get_page_uri( $page = 0 ) {
	if ( ! $page instanceof WP_Post ) {
		$page = get_post( $page );
	}

	if ( ! $page ) {
		return false;
	}

	$uri = $page->post_name;

	foreach ( $page->ancestors as $parent ) {
		$parent = get_post( $parent );
		if ( $parent && $parent->post_name ) {
			$uri = $parent->post_name . '/' . $uri;
		}
	}

	/**
	 * Filters the URI for a page.
	 *
	 * @since 4.4.0
	 *
	 * @param string  $uri  Page URI.
	 * @param WP_Post $page Page object.
	 */
	return apply_filters( 'get_page_uri', $uri, $page );
}

/**
 * Retrieves an array of pages (or hierarchical post type items).
 *
 * @since 1.5.0
 * @since 6.3.0 Use WP_Query internally.
 *
 * @param array|string $args {
 *     Optional. Array or string of arguments to retrieve pages.
 *
 *     @type int          $child_of     Page ID to return child and grandchild pages of. Note: The value
 *                                      of `$hierarchical` has no bearing on whether `$child_of` returns
 *                                      hierarchical results. Default 0, or no restriction.
 *     @type string       $sort_order   How to sort retrieved pages. Accepts 'ASC', 'DESC'. Default 'ASC'.
 *     @type string       $sort_column  What columns to sort pages by, comma-separated. Accepts 'post_author',
 *                                      'post_date', 'post_title', 'post_name', 'post_modified', 'menu_order',
 *                                      'post_modified_gmt', 'post_parent', 'ID', 'rand', 'comment_count'.
 *                                      'post_' can be omitted for any values that start with it.
 *                                      Default 'post_title'.
 *     @type bool         $hierarchical Whether to return pages hierarchically. If false in conjunction with
 *                                      `$child_of` also being false, both arguments will be disregarded.
 *                                      Default true.
 *     @type int[]        $exclude      Array of page IDs to exclude. Default empty array.
 *     @type int[]        $include      Array of page IDs to include. Cannot be used with `$child_of`,
 *                                      `$parent`, `$exclude`, `$meta_key`, `$meta_value`, or `$hierarchical`.
 *                                      Default empty array.
 *     @type string       $meta_key     Only include pages with this meta key. Default empty.
 *     @type string       $meta_value   Only include pages with this meta value. Requires `$meta_key`.
 *                                      Default empty.
 *     @type string       $authors      A comma-separated list of author IDs. Default empty.
 *     @type int          $parent       Page ID to return direct children of. Default -1, or no restriction.
 *     @type string|int[] $exclude_tree Comma-separated string or array of page IDs to exclude.
 *                                      Default empty array.
 *     @type int          $number       The number of pages to return. Default 0, or all pages.
 *     @type int          $offset       The number of pages to skip before returning. Requires `$number`.
 *                                      Default 0.
 *     @type string       $post_type    The post type to query. Default 'page'.
 *     @type string|array $post_status  A comma-separated list or array of post statuses to include.
 *                                      Default 'publish'.
 * }
 * @return WP_Post[]|false Array of pages (or hierarchical post type items). Boolean false if the
 *                         specified post type is not hierarchical or the specified status is not
 *                         supported by the post type.
 */
function get_pages( $args = array() ) {
	$defaults = array(
		'child_of'     => 0,
		'sort_order'   => 'ASC',
		'sort_column'  => 'post_title',
		'hierarchical' => 1,
		'exclude'      => array(),
		'include'      => array(),
		'meta_key'     => '',
		'meta_value'   => '',
		'authors'      => '',
		'parent'       => -1,
		'exclude_tree' => array(),
		'number'       => '',
		'offset'       => 0,
		'post_type'    => 'page',
		'post_status'  => 'publish',
	);

	$parsed_args = wp_parse_args( $args, $defaults );

	$number       = (int) $parsed_args['number'];
	$offset       = (int) $parsed_args['offset'];
	$child_of     = (int) $parsed_args['child_of'];
	$hierarchical = $parsed_args['hierarchical'];
	$exclude      = $parsed_args['exclude'];
	$meta_key     = $parsed_args['meta_key'];
	$meta_value   = $parsed_args['meta_value'];
	$parent       = $parsed_args['parent'];
	$post_status  = $parsed_args['post_status'];

	// Make sure the post type is hierarchical.
	$hierarchical_post_types = get_post_types( array( 'hierarchical' => true ) );
	if ( ! in_array( $parsed_args['post_type'], $hierarchical_post_types, true ) ) {
		return false;
	}

	if ( $parent > 0 && ! $child_of ) {
		$hierarchical = false;
	}

	// Make sure we have a valid post status.
	if ( ! is_array( $post_status ) ) {
		$post_status = explode( ',', $post_status );
	}
	if ( array_diff( $post_status, get_post_stati() ) ) {
		return false;
	}

	$query_args = array(
		'orderby'                => 'post_title',
		'order'                  => 'ASC',
		'post__not_in'           => wp_parse_id_list( $exclude ),
		'meta_key'               => $meta_key,
		'meta_value'             => $meta_value,
		'posts_per_page'         => -1,
		'offset'                 => $offset,
		'post_type'              => $parsed_args['post_type'],
		'post_status'            => $post_status,
		'update_post_term_cache' => false,
		'update_post_meta_cache' => false,
		'ignore_sticky_posts'    => true,
		'no_found_rows'          => true,
	);

	if ( ! empty( $parsed_args['include'] ) ) {
		$child_of = 0; // Ignore child_of, parent, exclude, meta_key, and meta_value params if using include.
		$parent   = -1;
		unset( $query_args['post__not_in'], $query_args['meta_key'], $query_args['meta_value'] );
		$hierarchical           = false;
		$query_args['post__in'] = wp_parse_id_list( $parsed_args['include'] );
	}

	if ( ! empty( $parsed_args['authors'] ) ) {
		$post_authors = wp_parse_list( $parsed_args['authors'] );

		if ( ! empty( $post_authors ) ) {
			$query_args['author__in'] = array();
			foreach ( $post_authors as $post_author ) {
				// Do we have an author id or an author login?
				if ( 0 == (int) $post_author ) {
					$post_author = get_user_by( 'login', $post_author );
					if ( empty( $post_author ) ) {
						continue;
					}
					if ( empty( $post_author->ID ) ) {
						continue;
					}
					$post_author = $post_author->ID;
				}
				$query_args['author__in'][] = (int) $post_author;
			}
		}
	}

	if ( is_array( $parent ) ) {
		$post_parent__in = array_map( 'absint', (array) $parent );
		if ( ! empty( $post_parent__in ) ) {
			$query_args['post_parent__in'] = $post_parent__in;
		}
	} elseif ( $parent >= 0 ) {
		$query_args['post_parent'] = $parent;
	}

	/*
	 * Maintain backward compatibility for `sort_column` key.
	 * Additionally to `WP_Query`, it has been supporting the `post_modified_gmt` field, so this logic will translate
	 * it to `post_modified` which should result in the same order given the two dates in the fields match.
	 */
	$orderby = wp_parse_list( $parsed_args['sort_column'] );
	$orderby = array_map(
		static function ( $orderby_field ) {
			$orderby_field = trim( $orderby_field );
			if ( 'post_modified_gmt' === $orderby_field || 'modified_gmt' === $orderby_field ) {
				$orderby_field = str_replace( '_gmt', '', $orderby_field );
			}
			return $orderby_field;
		},
		$orderby
	);
	if ( $orderby ) {
		$query_args['orderby'] = array_fill_keys( $orderby, $parsed_args['sort_order'] );
	}

	$order = $parsed_args['sort_order'];
	if ( $order ) {
		$query_args['order'] = $order;
	}

	if ( ! empty( $number ) ) {
		$query_args['posts_per_page'] = $number;
	}

	/**
	 * Filters query arguments passed to WP_Query in get_pages.
	 *
	 * @since 6.3.0
	 *
	 * @param array $query_args  Array of arguments passed to WP_Query.
	 * @param array $parsed_args Array of get_pages() arguments.
	 */
	$query_args = apply_filters( 'get_pages_query_args', $query_args, $parsed_args );

	$pages = new WP_Query();
	$pages = $pages->query( $query_args );

	if ( $child_of || $hierarchical ) {
		$pages = get_page_children( $child_of, $pages );
	}

	if ( ! empty( $parsed_args['exclude_tree'] ) ) {
		$exclude = wp_parse_id_list( $parsed_args['exclude_tree'] );
		foreach ( $exclude as $id ) {
			$children = get_page_children( $id, $pages );
			foreach ( $children as $child ) {
				$exclude[] = $child->ID;
			}
		}

		$num_pages = count( $pages );
		for ( $i = 0; $i < $num_pages; $i++ ) {
			if ( in_array( $pages[ $i ]->ID, $exclude, true ) ) {
				unset( $pages[ $i ] );
			}
		}
	}

	/**
	 * Filters the retrieved list of pages.
	 *
	 * @since 2.1.0
	 *
	 * @param WP_Post[] $pages       Array of page objects.
	 * @param array     $parsed_args Array of get_pages() arguments.
	 */
	return apply_filters( 'get_pages', $pages, $parsed_args );
}

//
// Attachment functions.
//

/**
 * Determines whether an attachment URI is local and really an attachment.
 *
 * For more information on this and similar theme functions, check out
 * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
 * Conditional Tags} article in the Theme Developer Handbook.
 *
 * @since 2.0.0
 *
 * @param string $url URL to check
 * @return bool True on success, false on failure.
 */
function is_local_attachment( $url ) {
	if ( ! str_contains( $url, home_url() ) ) {
		return false;
	}
	if ( str_contains( $url, home_url( '/?attachment_id=' ) ) ) {
		return true;
	}

	$id = url_to_postid( $url );
	if ( $id ) {
		$post = get_post( $id );
		if ( 'attachment' === $post->post_type ) {
			return true;
		}
	}
	return false;
}

/**
 * Inserts an attachment.
 *
 * If you set the 'ID' in the $args parameter, it will mean that you are
 * updating and attempt to update the attachment. You can also set the
 * attachment name or title by setting the key 'post_name' or 'post_title'.
 *
 * You can set the dates for the attachment manually by setting the 'post_date'
 * and 'post_date_gmt' keys' values.
 *
 * By default, the comments will use the default settings for whether the
 * comments are allowed. You can close them manually or keep them open by
 * setting the value for the 'comment_status' key.
 *
 * @since 2.0.0
 * @since 4.7.0 Added the `$wp_error` parameter to allow a WP_Error to be returned on failure.
 * @since 5.6.0 Added the `$fire_after_hooks` parameter.
 *
 * @see wp_insert_post()
 *
 * @param string|array $args             Arguments for inserting an attachment.
 * @param string|false $file             Optional. Filename. Default false.
 * @param int          $parent_post_id   Optional. Parent post ID or 0 for no parent. Default 0.
 * @param bool         $wp_error         Optional. Whether to return a WP_Error on failure. Default false.
 * @param bool         $fire_after_hooks Optional. Whether to fire the after insert hooks. Default true.
 * @return int|WP_Error The attachment ID on success. The value 0 or WP_Error on failure.
 */
function wp_insert_attachment( $args, $file = false, $parent_post_id = 0, $wp_error = false, $fire_after_hooks = true ) {
	$defaults = array(
		'file'        => $file,
		'post_parent' => 0,
	);

	$data = wp_parse_args( $args, $defaults );

	if ( ! empty( $parent_post_id ) ) {
		$data['post_parent'] = $parent_post_id;
	}

	$data['post_type'] = 'attachment';

	return wp_insert_post( $data, $wp_error, $fire_after_hooks );
}

/**
 * Trashes or deletes an attachment.
 *
 * When an attachment is permanently deleted, the file will also be removed.
 * Deletion removes all post meta fields, taxonomy, comments, etc. associated
 * with the attachment (except the main post).
 *
 * The attachment is moved to the Trash instead of permanently deleted unless Trash
 * for media is disabled, item is already in the Trash, or $force_delete is true.
 *
 * @since 2.0.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param int  $post_id      Attachment ID.
 * @param bool $force_delete Optional. Whether to bypass Trash and force deletion.
 *                           Default false.
 * @return WP_Post|false|null Post data on success, false or null on failure.
 */
function wp_delete_attachment( $post_id, $force_delete = false ) {
	global $wpdb;

	$post = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->posts WHERE ID = %d", $post_id ) );

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

	$post = get_post( $post );

	if ( 'attachment' !== $post->post_type ) {
		return false;
	}

	if ( ! $force_delete && EMPTY_TRASH_DAYS && MEDIA_TRASH && 'trash' !== $post->post_status ) {
		return wp_trash_post( $post_id );
	}

	/**
	 * Filters whether an attachment deletion should take place.
	 *
	 * @since 5.5.0
	 *
	 * @param WP_Post|false|null $delete       Whether to go forward with deletion.
	 * @param WP_Post            $post         Post object.
	 * @param bool               $force_delete Whether to bypass the Trash.
	 */
	$check = apply_filters( 'pre_delete_attachment', null, $post, $force_delete );
	if ( null !== $check ) {
		return $check;
	}

	delete_post_meta( $post_id, '_wp_trash_meta_status' );
	delete_post_meta( $post_id, '_wp_trash_meta_time' );

	$meta         = wp_get_attachment_metadata( $post_id );
	$backup_sizes = get_post_meta( $post->ID, '_wp_attachment_backup_sizes', true );
	$file         = get_attached_file( $post_id );

	if ( is_multisite() && is_string( $file ) && ! empty( $file ) ) {
		clean_dirsize_cache( $file );
	}

	/**
	 * Fires before an attachment is deleted, at the start of wp_delete_attachment().
	 *
	 * @since 2.0.0
	 * @since 5.5.0 Added the `$post` parameter.
	 *
	 * @param int     $post_id Attachment ID.
	 * @param WP_Post $post    Post object.
	 */
	do_action( 'delete_attachment', $post_id, $post );

	wp_delete_object_term_relationships( $post_id, array( 'category', 'post_tag' ) );
	wp_delete_object_term_relationships( $post_id, get_object_taxonomies( $post->post_type ) );

	// Delete all for any posts.
	delete_metadata( 'post', null, '_thumbnail_id', $post_id, true );

	wp_defer_comment_counting( true );

	$comment_ids = $wpdb->get_col( $wpdb->prepare( "SELECT comment_ID FROM $wpdb->comments WHERE comment_post_ID = %d ORDER BY comment_ID DESC", $post_id ) );
	foreach ( $comment_ids as $comment_id ) {
		wp_delete_comment( $comment_id, true );
	}

	wp_defer_comment_counting( false );

	$post_meta_ids = $wpdb->get_col( $wpdb->prepare( "SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d ", $post_id ) );
	foreach ( $post_meta_ids as $mid ) {
		delete_metadata_by_mid( 'post', $mid );
	}

	/** This action is documented in wp-includes/post.php */
	do_action( 'delete_post', $post_id, $post );
	$result = $wpdb->delete( $wpdb->posts, array( 'ID' => $post_id ) );
	if ( ! $result ) {
		return false;
	}
	/** This action is documented in wp-includes/post.php */
	do_action( 'deleted_post', $post_id, $post );

	wp_delete_attachment_files( $post_id, $meta, $backup_sizes, $file );

	clean_post_cache( $post );

	return $post;
}

/**
 * Deletes all files that belong to the given attachment.
 *
 * @since 4.9.7
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param int    $post_id      Attachment ID.
 * @param array  $meta         The attachment's meta data.
 * @param array  $backup_sizes The meta data for the attachment's backup images.
 * @param string $file         Absolute path to the attachment's file.
 * @return bool True on success, false on failure.
 */
function wp_delete_attachment_files( $post_id, $meta, $backup_sizes, $file ) {
	global $wpdb;

	$uploadpath = wp_get_upload_dir();
	$deleted    = true;

	if ( ! empty( $meta['thumb'] ) ) {
		// Don't delete the thumb if another attachment uses it.
		if ( ! $wpdb->get_row( $wpdb->prepare( "SELECT meta_id FROM $wpdb->postmeta WHERE meta_key = '_wp_attachment_metadata' AND meta_value LIKE %s AND post_id <> %d", '%' . $wpdb->esc_like( $meta['thumb'] ) . '%', $post_id ) ) ) {
			$thumbfile = str_replace( wp_basename( $file ), $meta['thumb'], $file );

			if ( ! empty( $thumbfile ) ) {
				$thumbfile = path_join( $uploadpath['basedir'], $thumbfile );
				$thumbdir  = path_join( $uploadpath['basedir'], dirname( $file ) );

				if ( ! wp_delete_file_from_directory( $thumbfile, $thumbdir ) ) {
					$deleted = false;
				}
			}
		}
	}

	// Remove intermediate and backup images if there are any.
	if ( isset( $meta['sizes'] ) && is_array( $meta['sizes'] ) ) {
		$intermediate_dir = path_join( $uploadpath['basedir'], dirname( $file ) );

		foreach ( $meta['sizes'] as $size => $sizeinfo ) {
			$intermediate_file = str_replace( wp_basename( $file ), $sizeinfo['file'], $file );

			if ( ! empty( $intermediate_file ) ) {
				$intermediate_file = path_join( $uploadpath['basedir'], $intermediate_file );

				if ( ! wp_delete_file_from_directory( $intermediate_file, $intermediate_dir ) ) {
					$deleted = false;
				}
			}
		}
	}

	if ( ! empty( $meta['original_image'] ) ) {
		if ( empty( $intermediate_dir ) ) {
			$intermediate_dir = path_join( $uploadpath['basedir'], dirname( $file ) );
		}

		$original_image = str_replace( wp_basename( $file ), $meta['original_image'], $file );

		if ( ! empty( $original_image ) ) {
			$original_image = path_join( $uploadpath['basedir'], $original_image );

			if ( ! wp_delete_file_from_directory( $original_image, $intermediate_dir ) ) {
				$deleted = false;
			}
		}
	}

	if ( is_array( $backup_sizes ) ) {
		$del_dir = path_join( $uploadpath['basedir'], dirname( $meta['file'] ) );

		foreach ( $backup_sizes as $size ) {
			$del_file = path_join( dirname( $meta['file'] ), $size['file'] );

			if ( ! empty( $del_file ) ) {
				$del_file = path_join( $uploadpath['basedir'], $del_file );

				if ( ! wp_delete_file_from_directory( $del_file, $del_dir ) ) {
					$deleted = false;
				}
			}
		}
	}

	if ( ! wp_delete_file_from_directory( $file, $uploadpath['basedir'] ) ) {
		$deleted = false;
	}

	return $deleted;
}

/**
 * Retrieves attachment metadata for attachment ID.
 *
 * @since 2.1.0
 * @since 6.0.0 The `$filesize` value was added to the returned array.
 *
 * @param int  $attachment_id Attachment post ID. Defaults to global $post.
 * @param bool $unfiltered    Optional. If true, filters are not run. Default false.
 * @return array|false {
 *     Attachment metadata. False on failure.
 *
 *     @type int    $width      The width of the attachment.
 *     @type int    $height     The height of the attachment.
 *     @type string $file       The file path relative to `wp-content/uploads`.
 *     @type array  $sizes      Keys are size slugs, each value is an array containing
 *                              'file', 'width', 'height', and 'mime-type'.
 *     @type array  $image_meta Image metadata.
 *     @type int    $filesize   File size of the attachment.
 * }
 */
function wp_get_attachment_metadata( $attachment_id = 0, $unfiltered = false ) {
	$attachment_id = (int) $attachment_id;

	if ( ! $attachment_id ) {
		$post = get_post();

		if ( ! $post ) {
			return false;
		}

		$attachment_id = $post->ID;
	}

	$data = get_post_meta( $attachment_id, '_wp_attachment_metadata', true );

	if ( ! $data ) {
		return false;
	}

	if ( $unfiltered ) {
		return $data;
	}

	/**
	 * Filters the attachment meta data.
	 *
	 * @since 2.1.0
	 *
	 * @param array $data          Array of meta data for the given attachment.
	 * @param int   $attachment_id Attachment post ID.
	 */
	return apply_filters( 'wp_get_attachment_metadata', $data, $attachment_id );
}

/**
 * Updates metadata for an attachment.
 *
 * @since 2.1.0
 *
 * @param int   $attachment_id Attachment post ID.
 * @param array $data          Attachment meta data.
 * @return int|false False if $post is invalid.
 */
function wp_update_attachment_metadata( $attachment_id, $data ) {
	$attachment_id = (int) $attachment_id;

	$post = get_post( $attachment_id );

	if ( ! $post ) {
		return false;
	}

	/**
	 * Filters the updated attachment meta data.
	 *
	 * @since 2.1.0
	 *
	 * @param array $data          Array of updated attachment meta data.
	 * @param int   $attachment_id Attachment post ID.
	 */
	$data = apply_filters( 'wp_update_attachment_metadata', $data, $post->ID );
	if ( $data ) {
		return update_post_meta( $post->ID, '_wp_attachment_metadata', $data );
	} else {
		return delete_post_meta( $post->ID, '_wp_attachment_metadata' );
	}
}

/**
 * Retrieves the URL for an attachment.
 *
 * @since 2.1.0
 *
 * @global string $pagenow The filename of the current screen.
 *
 * @param int $attachment_id Optional. Attachment post ID. Defaults to global $post.
 * @return string|false Attachment URL, otherwise false.
 */
function wp_get_attachment_url( $attachment_id = 0 ) {
	global $pagenow;

	$attachment_id = (int) $attachment_id;

	$post = get_post( $attachment_id );

	if ( ! $post ) {
		return false;
	}

	if ( 'attachment' !== $post->post_type ) {
		return false;
	}

	$url = '';
	// Get attached file.
	$file = get_post_meta( $post->ID, '_wp_attached_file', true );
	if ( $file ) {
		// Get upload directory.
		$uploads = wp_get_upload_dir();
		if ( $uploads && false === $uploads['error'] ) {
			// Check that the upload base exists in the file location.
			if ( str_starts_with( $file, $uploads['basedir'] ) ) {
				// Replace file location with url location.
				$url = str_replace( $uploads['basedir'], $uploads['baseurl'], $file );
			} elseif ( str_contains( $file, 'wp-content/uploads' ) ) {
				// Get the directory name relative to the basedir (back compat for pre-2.7 uploads).
				$url = trailingslashit( $uploads['baseurl'] . '/' . _wp_get_attachment_relative_path( $file ) ) . wp_basename( $file );
			} else {
				// It's a newly-uploaded file, therefore $file is relative to the basedir.
				$url = $uploads['baseurl'] . "/$file";
			}
		}
	}

	/*
	 * If any of the above options failed, Fallback on the GUID as used pre-2.7,
	 * not recommended to rely upon this.
	 */
	if ( ! $url ) {
		$url = get_the_guid( $post->ID );
	}

	// On SSL front end, URLs should be HTTPS.
	if ( is_ssl() && ! is_admin() && 'wp-login.php' !== $pagenow ) {
		$url = set_url_scheme( $url );
	}

	/**
	 * Filters the attachment URL.
	 *
	 * @since 2.1.0
	 *
	 * @param string $url           URL for the given attachment.
	 * @param int    $attachment_id Attachment post ID.
	 */
	$url = apply_filters( 'wp_get_attachment_url', $url, $post->ID );

	if ( ! $url ) {
		return false;
	}

	return $url;
}

/**
 * Retrieves the caption for an attachment.
 *
 * @since 4.6.0
 *
 * @param int $post_id Optional. Attachment ID. Default is the ID of the global `$post`.
 * @return string|false Attachment caption on success, false on failure.
 */
function wp_get_attachment_caption( $post_id = 0 ) {
	$post_id = (int) $post_id;
	$post    = get_post( $post_id );

	if ( ! $post ) {
		return false;
	}

	if ( 'attachment' !== $post->post_type ) {
		return false;
	}

	$caption = $post->post_excerpt;

	/**
	 * Filters the attachment caption.
	 *
	 * @since 4.6.0
	 *
	 * @param string $caption Caption for the given attachment.
	 * @param int    $post_id Attachment ID.
	 */
	return apply_filters( 'wp_get_attachment_caption', $caption, $post->ID );
}

/**
 * Retrieves URL for an attachment thumbnail.
 *
 * @since 2.1.0
 * @since 6.1.0 Changed to use wp_get_attachment_image_url().
 *
 * @param int $post_id Optional. Attachment ID. Default is the ID of the global `$post`.
 * @return string|false Thumbnail URL on success, false on failure.
 */
function wp_get_attachment_thumb_url( $post_id = 0 ) {
	$post_id = (int) $post_id;

	/*
	 * This uses image_downsize() which also looks for the (very) old format $image_meta['thumb']
	 * when the newer format $image_meta['sizes']['thumbnail'] doesn't exist.
	 */
	$thumbnail_url = wp_get_attachment_image_url( $post_id, 'thumbnail' );

	if ( empty( $thumbnail_url ) ) {
		return false;
	}

	/**
	 * Filters the attachment thumbnail URL.
	 *
	 * @since 2.1.0
	 *
	 * @param string $thumbnail_url URL for the attachment thumbnail.
	 * @param int    $post_id       Attachment ID.
	 */
	return apply_filters( 'wp_get_attachment_thumb_url', $thumbnail_url, $post_id );
}

/**
 * Verifies an attachment is of a given type.
 *
 * @since 4.2.0
 *
 * @param string      $type Attachment type. Accepts `image`, `audio`, `video`, or a file extension.
 * @param int|WP_Post $post Optional. Attachment ID or object. Default is global $post.
 * @return bool True if an accepted type or a matching file extension, false otherwise.
 */
function wp_attachment_is( $type, $post = null ) {
	$post = get_post( $post );

	if ( ! $post ) {
		return false;
	}

	$file = get_attached_file( $post->ID );

	if ( ! $file ) {
		return false;
	}

	if ( str_starts_with( $post->post_mime_type, $type . '/' ) ) {
		return true;
	}

	$check = wp_check_filetype( $file );

	if ( empty( $check['ext'] ) ) {
		return false;
	}

	$ext = $check['ext'];

	if ( 'import' !== $post->post_mime_type ) {
		return $type === $ext;
	}

	switch ( $type ) {
		case 'image':
			$image_exts = array( 'jpg', 'jpeg', 'jpe', 'gif', 'png', 'webp', 'avif' );
			return in_array( $ext, $image_exts, true );

		case 'audio':
			return in_array( $ext, wp_get_audio_extensions(), true );

		case 'video':
			return in_array( $ext, wp_get_video_extensions(), true );

		default:
			return $type === $ext;
	}
}

/**
 * Determines whether an attachment is an image.
 *
 * For more information on this and similar theme functions, check out
 * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
 * Conditional Tags} article in the Theme Developer Handbook.
 *
 * @since 2.1.0
 * @since 4.2.0 Modified into wrapper for wp_attachment_is() and
 *              allowed WP_Post object to be passed.
 *
 * @param int|WP_Post $post Optional. Attachment ID or object. Default is global $post.
 * @return bool Whether the attachment is an image.
 */
function wp_attachment_is_image( $post = null ) {
	return wp_attachment_is( 'image', $post );
}

/**
 * Retrieves the icon for a MIME type or attachment.
 *
 * @since 2.1.0
 * @since 6.5.0 Added the `$preferred_ext` parameter.
 *
 * @param string|int $mime          MIME type or attachment ID.
 * @param string     $preferred_ext File format to prefer in return. Default '.png'.
 * @return string|false Icon, false otherwise.
 */
function wp_mime_type_icon( $mime = 0, $preferred_ext = '.png' ) {
	if ( ! is_numeric( $mime ) ) {
		$icon = wp_cache_get( "mime_type_icon_$mime" );
	}

	$post_id = 0;
	if ( empty( $icon ) ) {
		$post_mimes = array();
		if ( is_numeric( $mime ) ) {
			$mime = (int) $mime;
			$post = get_post( $mime );
			if ( $post ) {
				$post_id = (int) $post->ID;
				$file    = get_attached_file( $post_id );
				$ext     = preg_replace( '/^.+?\.([^.]+)$/', '$1', $file );
				if ( ! empty( $ext ) ) {
					$post_mimes[] = $ext;
					$ext_type     = wp_ext2type( $ext );
					if ( $ext_type ) {
						$post_mimes[] = $ext_type;
					}
				}
				$mime = $post->post_mime_type;
			} else {
				$mime = 0;
			}
		} else {
			$post_mimes[] = $mime;
		}

		$icon_files = wp_cache_get( 'icon_files' );

		if ( ! is_array( $icon_files ) ) {
			/**
			 * Filters the icon directory path.
			 *
			 * @since 2.0.0
			 *
			 * @param string $path Icon directory absolute path.
			 */
			$icon_dir = apply_filters( 'icon_dir', ABSPATH . WPINC . '/images/media' );

			/**
			 * Filters the icon directory URI.
			 *
			 * @since 2.0.0
			 *
			 * @param string $uri Icon directory URI.
			 */
			$icon_dir_uri = apply_filters( 'icon_dir_uri', includes_url( 'images/media' ) );

			/**
			 * Filters the array of icon directory URIs.
			 *
			 * @since 2.5.0
			 *
			 * @param string[] $uris Array of icon directory URIs keyed by directory absolute path.
			 */
			$dirs       = apply_filters( 'icon_dirs', array( $icon_dir => $icon_dir_uri ) );
			$icon_files = array();
			$all_icons  = array();
			while ( $dirs ) {
				$keys = array_keys( $dirs );
				$dir  = array_shift( $keys );
				$uri  = array_shift( $dirs );
				$dh   = opendir( $dir );
				if ( $dh ) {
					while ( false !== $file = readdir( $dh ) ) {
						$file = wp_basename( $file );
						if ( str_starts_with( $file, '.' ) ) {
							continue;
						}

						$ext = strtolower( substr( $file, -4 ) );
						if ( ! in_array( $ext, array( '.svg', '.png', '.gif', '.jpg' ), true ) ) {
							if ( is_dir( "$dir/$file" ) ) {
								$dirs[ "$dir/$file" ] = "$uri/$file";
							}
							continue;
						}
						$all_icons[ "$dir/$file" ] = "$uri/$file";
						if ( $ext === $preferred_ext ) {
							$icon_files[ "$dir/$file" ] = "$uri/$file";
						}
					}
					closedir( $dh );
				}
			}
			// If directory only contained icons of a non-preferred format, return those.
			if ( empty( $icon_files ) ) {
				$icon_files = $all_icons;
			}
			wp_cache_add( 'icon_files', $icon_files, 'default', 600 );
		}

		$types = array();
		// Icon wp_basename - extension = MIME wildcard.
		foreach ( $icon_files as $file => $uri ) {
			$types[ preg_replace( '/^([^.]*).*$/', '$1', wp_basename( $file ) ) ] =& $icon_files[ $file ];
		}

		if ( ! empty( $mime ) ) {
			$post_mimes[] = substr( $mime, 0, strpos( $mime, '/' ) );
			$post_mimes[] = substr( $mime, strpos( $mime, '/' ) + 1 );
			$post_mimes[] = str_replace( '/', '_', $mime );
		}

		$matches            = wp_match_mime_types( array_keys( $types ), $post_mimes );
		$matches['default'] = array( 'default' );

		foreach ( $matches as $match => $wilds ) {
			foreach ( $wilds as $wild ) {
				if ( ! isset( $types[ $wild ] ) ) {
					continue;
				}

				$icon = $types[ $wild ];
				if ( ! is_numeric( $mime ) ) {
					wp_cache_add( "mime_type_icon_$mime", $icon );
				}
				break 2;
			}
		}
	}

	/**
	 * Filters the mime type icon.
	 *
	 * @since 2.1.0
	 *
	 * @param string $icon    Path to the mime type icon.
	 * @param string $mime    Mime type.
	 * @param int    $post_id Attachment ID. Will equal 0 if the function passed
	 *                        the mime type.
	 */
	return apply_filters( 'wp_mime_type_icon', $icon, $mime, $post_id );
}

/**
 * Checks for changed slugs for published post objects and save the old slug.
 *
 * The function is used when a post object of any type is updated,
 * by comparing the current and previous post objects.
 *
 * If the slug was changed and not already part of the old slugs then it will be
 * added to the post meta field ('_wp_old_slug') for storing old slugs for that
 * post.
 *
 * The most logically usage of this function is redirecting changed post objects, so
 * that those that linked to an changed post will be redirected to the new post.
 *
 * @since 2.1.0
 *
 * @param int     $post_id     Post ID.
 * @param WP_Post $post        The post object.
 * @param WP_Post $post_before The previous post object.
 */
function wp_check_for_changed_slugs( $post_id, $post, $post_before ) {
	// Don't bother if it hasn't changed.
	if ( $post->post_name == $post_before->post_name ) {
		return;
	}

	// We're only concerned with published, non-hierarchical objects.
	if ( ! ( 'publish' === $post->post_status || ( 'attachment' === get_post_type( $post ) && 'inherit' === $post->post_status ) ) || is_post_type_hierarchical( $post->post_type ) ) {
		return;
	}

	$old_slugs = (array) get_post_meta( $post_id, '_wp_old_slug' );

	// If we haven't added this old slug before, add it now.
	if ( ! empty( $post_before->post_name ) && ! in_array( $post_before->post_name, $old_slugs, true ) ) {
		add_post_meta( $post_id, '_wp_old_slug', $post_before->post_name );
	}

	// If the new slug was used previously, delete it from the list.
	if ( in_array( $post->post_name, $old_slugs, true ) ) {
		delete_post_meta( $post_id, '_wp_old_slug', $post->post_name );
	}
}

/**
 * Checks for changed dates for published post objects and save the old date.
 *
 * The function is used when a post object of any type is updated,
 * by comparing the current and previous post objects.
 *
 * If the date was changed and not already part of the old dates then it will be
 * added to the post meta field ('_wp_old_date') for storing old dates for that
 * post.
 *
 * The most logically usage of this function is redirecting changed post objects, so
 * that those that linked to an changed post will be redirected to the new post.
 *
 * @since 4.9.3
 *
 * @param int     $post_id     Post ID.
 * @param WP_Post $post        The post object.
 * @param WP_Post $post_before The previous post object.
 */
function wp_check_for_changed_dates( $post_id, $post, $post_before ) {
	$previous_date = gmdate( 'Y-m-d', strtotime( $post_before->post_date ) );
	$new_date      = gmdate( 'Y-m-d', strtotime( $post->post_date ) );

	// Don't bother if it hasn't changed.
	if ( $new_date == $previous_date ) {
		return;
	}

	// We're only concerned with published, non-hierarchical objects.
	if ( ! ( 'publish' === $post->post_status || ( 'attachment' === get_post_type( $post ) && 'inherit' === $post->post_status ) ) || is_post_type_hierarchical( $post->post_type ) ) {
		return;
	}

	$old_dates = (array) get_post_meta( $post_id, '_wp_old_date' );

	// If we haven't added this old date before, add it now.
	if ( ! empty( $previous_date ) && ! in_array( $previous_date, $old_dates, true ) ) {
		add_post_meta( $post_id, '_wp_old_date', $previous_date );
	}

	// If the new slug was used previously, delete it from the list.
	if ( in_array( $new_date, $old_dates, true ) ) {
		delete_post_meta( $post_id, '_wp_old_date', $new_date );
	}
}

/**
 * Retrieves the private post SQL based on capability.
 *
 * This function provides a standardized way to appropriately select on the
 * post_status of a post type. The function will return a piece of SQL code
 * that can be added to a WHERE clause; this SQL is constructed to allow all
 * published posts, and all private posts to which the user has access.
 *
 * @since 2.2.0
 * @since 4.3.0 Added the ability to pass an array to `$post_type`.
 *
 * @param string|array $post_type Single post type or an array of post types. Currently only supports 'post' or 'page'.
 * @return string SQL code that can be added to a where clause.
 */
function get_private_posts_cap_sql( $post_type ) {
	return get_posts_by_author_sql( $post_type, false );
}

/**
 * Retrieves the post SQL based on capability, author, and type.
 *
 * @since 3.0.0
 * @since 4.3.0 Introduced the ability to pass an array of post types to `$post_type`.
 *
 * @see get_private_posts_cap_sql()
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param string|string[] $post_type   Single post type or an array of post types.
 * @param bool            $full        Optional. Returns a full WHERE statement instead of just
 *                                     an 'andalso' term. Default true.
 * @param int             $post_author Optional. Query posts having a single author ID. Default null.
 * @param bool            $public_only Optional. Only return public posts. Skips cap checks for
 *                                     $current_user.  Default false.
 * @return string SQL WHERE code that can be added to a query.
 */
function get_posts_by_author_sql( $post_type, $full = true, $post_author = null, $public_only = false ) {
	global $wpdb;

	if ( is_array( $post_type ) ) {
		$post_types = $post_type;
	} else {
		$post_types = array( $post_type );
	}

	$post_type_clauses = array();
	foreach ( $post_types as $post_type ) {
		$post_type_obj = get_post_type_object( $post_type );

		if ( ! $post_type_obj ) {
			continue;
		}

		/**
		 * Filters the capability to read private posts for a custom post type
		 * when generating SQL for getting posts by author.
		 *
		 * @since 2.2.0
		 * @deprecated 3.2.0 The hook transitioned from "somewhat useless" to "totally useless".
		 *
		 * @param string $cap Capability.
		 */
		$cap = apply_filters_deprecated( 'pub_priv_sql_capability', array( '' ), '3.2.0' );

		if ( ! $cap ) {
			$cap = current_user_can( $post_type_obj->cap->read_private_posts );
		}

		// Only need to check the cap if $public_only is false.
		$post_status_sql = "post_status = 'publish'";

		if ( false === $public_only ) {
			if ( $cap ) {
				// Does the user have the capability to view private posts? Guess so.
				$post_status_sql .= " OR post_status = 'private'";
			} elseif ( is_user_logged_in() ) {
				// Users can view their own private posts.
				$id = get_current_user_id();
				if ( null === $post_author || ! $full ) {
					$post_status_sql .= " OR post_status = 'private' AND post_author = $id";
				} elseif ( $id == (int) $post_author ) {
					$post_status_sql .= " OR post_status = 'private'";
				} // Else none.
			} // Else none.
		}

		$post_type_clauses[] = "( post_type = '" . $post_type . "' AND ( $post_status_sql ) )";
	}

	if ( empty( $post_type_clauses ) ) {
		return $full ? 'WHERE 1 = 0' : '1 = 0';
	}

	$sql = '( ' . implode( ' OR ', $post_type_clauses ) . ' )';

	if ( null !== $post_author ) {
		$sql .= $wpdb->prepare( ' AND post_author = %d', $post_author );
	}

	if ( $full ) {
		$sql = 'WHERE ' . $sql;
	}

	return $sql;
}

/**
 * Retrieves the most recent time that a post on the site was published.
 *
 * The server timezone is the default and is the difference between GMT and
 * server time. The 'blog' value is the date when the last post was posted.
 * The 'gmt' is when the last post was posted in GMT formatted date.
 *
 * @since 0.71
 * @since 4.4.0 The `$post_type` argument was added.
 *
 * @param string $timezone  Optional. The timezone for the timestamp. Accepts 'server', 'blog', or 'gmt'.
 *                          'server' uses the server's internal timezone.
 *                          'blog' uses the `post_date` field, which proxies to the timezone set for the site.
 *                          'gmt' uses the `post_date_gmt` field.
 *                          Default 'server'.
 * @param string $post_type Optional. The post type to check. Default 'any'.
 * @return string The date of the last post, or false on failure.
 */
function get_lastpostdate( $timezone = 'server', $post_type = 'any' ) {
	$lastpostdate = _get_last_post_time( $timezone, 'date', $post_type );

	/**
	 * Filters the most recent time that a post on the site was published.
	 *
	 * @since 2.3.0
	 * @since 5.5.0 Added the `$post_type` parameter.
	 *
	 * @param string|false $lastpostdate The most recent time that a post was published,
	 *                                   in 'Y-m-d H:i:s' format. False on failure.
	 * @param string       $timezone     Location to use for getting the post published date.
	 *                                   See get_lastpostdate() for accepted `$timezone` values.
	 * @param string       $post_type    The post type to check.
	 */
	return apply_filters( 'get_lastpostdate', $lastpostdate, $timezone, $post_type );
}

/**
 * Gets the most recent time that a post on the site was modified.
 *
 * The server timezone is the default and is the difference between GMT and
 * server time. The 'blog' value is just when the last post was modified.
 * The 'gmt' is when the last post was modified in GMT time.
 *
 * @since 1.2.0
 * @since 4.4.0 The `$post_type` argument was added.
 *
 * @param string $timezone  Optional. The timezone for the timestamp. See get_lastpostdate()
 *                          for information on accepted values.
 *                          Default 'server'.
 * @param string $post_type Optional. The post type to check. Default 'any'.
 * @return string The timestamp in 'Y-m-d H:i:s' format, or false on failure.
 */
function get_lastpostmodified( $timezone = 'server', $post_type = 'any' ) {
	/**
	 * Pre-filter the return value of get_lastpostmodified() before the query is run.
	 *
	 * @since 4.4.0
	 *
	 * @param string|false $lastpostmodified The most recent time that a post was modified,
	 *                                       in 'Y-m-d H:i:s' format, or false. Returning anything
	 *                                       other than false will short-circuit the function.
	 * @param string       $timezone         Location to use for getting the post modified date.
	 *                                       See get_lastpostdate() for accepted `$timezone` values.
	 * @param string       $post_type        The post type to check.
	 */
	$lastpostmodified = apply_filters( 'pre_get_lastpostmodified', false, $timezone, $post_type );

	if ( false !== $lastpostmodified ) {
		return $lastpostmodified;
	}

	$lastpostmodified = _get_last_post_time( $timezone, 'modified', $post_type );
	$lastpostdate     = get_lastpostdate( $timezone, $post_type );

	if ( $lastpostdate > $lastpostmodified ) {
		$lastpostmodified = $lastpostdate;
	}

	/**
	 * Filters the most recent time that a post on the site was modified.
	 *
	 * @since 2.3.0
	 * @since 5.5.0 Added the `$post_type` parameter.
	 *
	 * @param string|false $lastpostmodified The most recent time that a post was modified,
	 *                                       in 'Y-m-d H:i:s' format. False on failure.
	 * @param string       $timezone         Location to use for getting the post modified date.
	 *                                       See get_lastpostdate() for accepted `$timezone` values.
	 * @param string       $post_type        The post type to check.
	 */
	return apply_filters( 'get_lastpostmodified', $lastpostmodified, $timezone, $post_type );
}

/**
 * Gets the timestamp of the last time any post was modified or published.
 *
 * @since 3.1.0
 * @since 4.4.0 The `$post_type` argument was added.
 * @access private
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param string $timezone  The timezone for the timestamp. See get_lastpostdate().
 *                          for information on accepted values.
 * @param string $field     Post field to check. Accepts 'date' or 'modified'.
 * @param string $post_type Optional. The post type to check. Default 'any'.
 * @return string|false The timestamp in 'Y-m-d H:i:s' format, or false on failure.
 */
function _get_last_post_time( $timezone, $field, $post_type = 'any' ) {
	global $wpdb;

	if ( ! in_array( $field, array( 'date', 'modified' ), true ) ) {
		return false;
	}

	$timezone = strtolower( $timezone );

	$key = "lastpost{$field}:$timezone";
	if ( 'any' !== $post_type ) {
		$key .= ':' . sanitize_key( $post_type );
	}

	$date = wp_cache_get( $key, 'timeinfo' );
	if ( false !== $date ) {
		return $date;
	}

	if ( 'any' === $post_type ) {
		$post_types = get_post_types( array( 'public' => true ) );
		array_walk( $post_types, array( $wpdb, 'escape_by_ref' ) );
		$post_types = "'" . implode( "', '", $post_types ) . "'";
	} else {
		$post_types = "'" . sanitize_key( $post_type ) . "'";
	}

	switch ( $timezone ) {
		case 'gmt':
			$date = $wpdb->get_var( "SELECT post_{$field}_gmt FROM $wpdb->posts WHERE post_status = 'publish' AND post_type IN ({$post_types}) ORDER BY post_{$field}_gmt DESC LIMIT 1" );
			break;
		case 'blog':
			$date = $wpdb->get_var( "SELECT post_{$field} FROM $wpdb->posts WHERE post_status = 'publish' AND post_type IN ({$post_types}) ORDER BY post_{$field}_gmt DESC LIMIT 1" );
			break;
		case 'server':
			$add_seconds_server = gmdate( 'Z' );
			$date               = $wpdb->get_var( "SELECT DATE_ADD(post_{$field}_gmt, INTERVAL '$add_seconds_server' SECOND) FROM $wpdb->posts WHERE post_status = 'publish' AND post_type IN ({$post_types}) ORDER BY post_{$field}_gmt DESC LIMIT 1" );
			break;
	}

	if ( $date ) {
		wp_cache_set( $key, $date, 'timeinfo' );

		return $date;
	}

	return false;
}

/**
 * Updates posts in cache.
 *
 * @since 1.5.1
 *
 * @param WP_Post[] $posts Array of post objects (passed by reference).
 */
function update_post_cache( &$posts ) {
	if ( ! $posts ) {
		return;
	}

	$data = array();
	foreach ( $posts as $post ) {
		if ( empty( $post->filter ) || 'raw' !== $post->filter ) {
			$post = sanitize_post( $post, 'raw' );
		}
		$data[ $post->ID ] = $post;
	}
	wp_cache_add_multiple( $data, 'posts' );
}

/**
 * Will clean the post in the cache.
 *
 * Cleaning means delete from the cache of the post. Will call to clean the term
 * object cache associated with the post ID.
 *
 * This function not run if $_wp_suspend_cache_invalidation is not empty. See
 * wp_suspend_cache_invalidation().
 *
 * @since 2.0.0
 *
 * @global bool $_wp_suspend_cache_invalidation
 *
 * @param int|WP_Post $post Post ID or post object to remove from the cache.
 */
function clean_post_cache( $post ) {
	global $_wp_suspend_cache_invalidation;

	if ( ! empty( $_wp_suspend_cache_invalidation ) ) {
		return;
	}

	$post = get_post( $post );

	if ( ! $post ) {
		return;
	}

	wp_cache_delete( $post->ID, 'posts' );
	wp_cache_delete( 'post_parent:' . (string) $post->ID, 'posts' );
	wp_cache_delete( $post->ID, 'post_meta' );

	clean_object_term_cache( $post->ID, $post->post_type );

	wp_cache_delete( 'wp_get_archives', 'general' );

	/**
	 * Fires immediately after the given post's cache is cleaned.
	 *
	 * @since 2.5.0
	 *
	 * @param int     $post_id Post ID.
	 * @param WP_Post $post    Post object.
	 */
	do_action( 'clean_post_cache', $post->ID, $post );

	if ( 'page' === $post->post_type ) {
		wp_cache_delete( 'all_page_ids', 'posts' );

		/**
		 * Fires immediately after the given page's cache is cleaned.
		 *
		 * @since 2.5.0
		 *
		 * @param int $post_id Post ID.
		 */
		do_action( 'clean_page_cache', $post->ID );
	}

	wp_cache_set_posts_last_changed();
}

/**
 * Updates post, term, and metadata caches for a list of post objects.
 *
 * @since 1.5.0
 *
 * @param WP_Post[] $posts             Array of post objects (passed by reference).
 * @param string    $post_type         Optional. Post type. Default 'post'.
 * @param bool      $update_term_cache Optional. Whether to update the term cache. Default true.
 * @param bool      $update_meta_cache Optional. Whether to update the meta cache. Default true.
 */
function update_post_caches( &$posts, $post_type = 'post', $update_term_cache = true, $update_meta_cache = true ) {
	// No point in doing all this work if we didn't match any posts.
	if ( ! $posts ) {
		return;
	}

	update_post_cache( $posts );

	$post_ids = array();
	foreach ( $posts as $post ) {
		$post_ids[] = $post->ID;
	}

	if ( ! $post_type ) {
		$post_type = 'any';
	}

	if ( $update_term_cache ) {
		if ( is_array( $post_type ) ) {
			$ptypes = $post_type;
		} elseif ( 'any' === $post_type ) {
			$ptypes = array();
			// Just use the post_types in the supplied posts.
			foreach ( $posts as $post ) {
				$ptypes[] = $post->post_type;
			}
			$ptypes = array_unique( $ptypes );
		} else {
			$ptypes = array( $post_type );
		}

		if ( ! empty( $ptypes ) ) {
			update_object_term_cache( $post_ids, $ptypes );
		}
	}

	if ( $update_meta_cache ) {
		update_postmeta_cache( $post_ids );
	}
}

/**
 * Updates post author user caches for a list of post objects.
 *
 * @since 6.1.0
 *
 * @param WP_Post[] $posts Array of post objects.
 */
function update_post_author_caches( $posts ) {
	/*
	 * cache_users() is a pluggable function so is not available prior
	 * to the `plugins_loaded` hook firing. This is to ensure against
	 * fatal errors when the function is not available.
	 */
	if ( ! function_exists( 'cache_users' ) ) {
		return;
	}

	$author_ids = wp_list_pluck( $posts, 'post_author' );
	$author_ids = array_map( 'absint', $author_ids );
	$author_ids = array_unique( array_filter( $author_ids ) );

	cache_users( $author_ids );
}

/**
 * Updates parent post caches for a list of post objects.
 *
 * @since 6.1.0
 *
 * @param WP_Post[] $posts Array of post objects.
 */
function update_post_parent_caches( $posts ) {
	$parent_ids = wp_list_pluck( $posts, 'post_parent' );
	$parent_ids = array_map( 'absint', $parent_ids );
	$parent_ids = array_unique( array_filter( $parent_ids ) );

	if ( ! empty( $parent_ids ) ) {
		_prime_post_caches( $parent_ids, false );
	}
}

/**
 * Updates metadata cache for a list of post IDs.
 *
 * Performs SQL query to retrieve the metadata for the post IDs and updates the
 * metadata cache for the posts. Therefore, the functions, which call this
 * function, do not need to perform SQL queries on their own.
 *
 * @since 2.1.0
 *
 * @param int[] $post_ids Array of post IDs.
 * @return array|false An array of metadata on success, false if there is nothing to update.
 */
function update_postmeta_cache( $post_ids ) {
	return update_meta_cache( 'post', $post_ids );
}

/**
 * Will clean the attachment in the cache.
 *
 * Cleaning means delete from the cache. Optionally will clean the term
 * object cache associated with the attachment ID.
 *
 * This function will not run if $_wp_suspend_cache_invalidation is not empty.
 *
 * @since 3.0.0
 *
 * @global bool $_wp_suspend_cache_invalidation
 *
 * @param int  $id          The attachment ID in the cache to clean.
 * @param bool $clean_terms Optional. Whether to clean terms cache. Default false.
 */
function clean_attachment_cache( $id, $clean_terms = false ) {
	global $_wp_suspend_cache_invalidation;

	if ( ! empty( $_wp_suspend_cache_invalidation ) ) {
		return;
	}

	$id = (int) $id;

	wp_cache_delete( $id, 'posts' );
	wp_cache_delete( $id, 'post_meta' );

	if ( $clean_terms ) {
		clean_object_term_cache( $id, 'attachment' );
	}

	/**
	 * Fires after the given attachment's cache is cleaned.
	 *
	 * @since 3.0.0
	 *
	 * @param int $id Attachment ID.
	 */
	do_action( 'clean_attachment_cache', $id );
}

//
// Hooks.
//

/**
 * Hook for managing future post transitions to published.
 *
 * @since 2.3.0
 * @access private
 *
 * @see wp_clear_scheduled_hook()
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param string  $new_status New post status.
 * @param string  $old_status Previous post status.
 * @param WP_Post $post       Post object.
 */
function _transition_post_status( $new_status, $old_status, $post ) {
	global $wpdb;

	if ( 'publish' !== $old_status && 'publish' === $new_status ) {
		// Reset GUID if transitioning to publish and it is empty.
		if ( '' === get_the_guid( $post->ID ) ) {
			$wpdb->update( $wpdb->posts, array( 'guid' => get_permalink( $post->ID ) ), array( 'ID' => $post->ID ) );
		}

		/**
		 * Fires when a post's status is transitioned from private to published.
		 *
		 * @since 1.5.0
		 * @deprecated 2.3.0 Use {@see 'private_to_publish'} instead.
		 *
		 * @param int $post_id Post ID.
		 */
		do_action_deprecated( 'private_to_published', array( $post->ID ), '2.3.0', 'private_to_publish' );
	}

	// If published posts changed clear the lastpostmodified cache.
	if ( 'publish' === $new_status || 'publish' === $old_status ) {
		foreach ( array( 'server', 'gmt', 'blog' ) as $timezone ) {
			wp_cache_delete( "lastpostmodified:$timezone", 'timeinfo' );
			wp_cache_delete( "lastpostdate:$timezone", 'timeinfo' );
			wp_cache_delete( "lastpostdate:$timezone:{$post->post_type}", 'timeinfo' );
		}
	}

	if ( $new_status !== $old_status ) {
		wp_cache_delete( _count_posts_cache_key( $post->post_type ), 'counts' );
		wp_cache_delete( _count_posts_cache_key( $post->post_type, 'readable' ), 'counts' );
	}

	// Always clears the hook in case the post status bounced from future to draft.
	wp_clear_scheduled_hook( 'publish_future_post', array( $post->ID ) );
}

/**
 * Hook used to schedule publication for a post marked for the future.
 *
 * The $post properties used and must exist are 'ID' and 'post_date_gmt'.
 *
 * @since 2.3.0
 * @access private
 *
 * @param int     $deprecated Not used. Can be set to null. Never implemented. Not marked
 *                            as deprecated with _deprecated_argument() as it conflicts with
 *                            wp_transition_post_status() and the default filter for _future_post_hook().
 * @param WP_Post $post       Post object.
 */
function _future_post_hook( $deprecated, $post ) {
	wp_clear_scheduled_hook( 'publish_future_post', array( $post->ID ) );
	wp_schedule_single_event( strtotime( get_gmt_from_date( $post->post_date ) . ' GMT' ), 'publish_future_post', array( $post->ID ) );
}

/**
 * Hook to schedule pings and enclosures when a post is published.
 *
 * Uses XMLRPC_REQUEST and WP_IMPORTING constants.
 *
 * @since 2.3.0
 * @access private
 *
 * @param int $post_id The ID of the post being published.
 */
function _publish_post_hook( $post_id ) {
	if ( defined( 'XMLRPC_REQUEST' ) ) {
		/**
		 * Fires when _publish_post_hook() is called during an XML-RPC request.
		 *
		 * @since 2.1.0
		 *
		 * @param int $post_id Post ID.
		 */
		do_action( 'xmlrpc_publish_post', $post_id );
	}

	if ( defined( 'WP_IMPORTING' ) ) {
		return;
	}

	if ( get_option( 'default_pingback_flag' ) ) {
		add_post_meta( $post_id, '_pingme', '1', true );
	}
	add_post_meta( $post_id, '_encloseme', '1', true );

	$to_ping = get_to_ping( $post_id );
	if ( ! empty( $to_ping ) ) {
		add_post_meta( $post_id, '_trackbackme', '1' );
	}

	if ( ! wp_next_scheduled( 'do_pings' ) ) {
		wp_schedule_single_event( time(), 'do_pings' );
	}
}

/**
 * Returns the ID of the post's parent.
 *
 * @since 3.1.0
 * @since 5.9.0 The `$post` parameter was made optional.
 *
 * @param int|WP_Post|null $post Optional. Post ID or post object. Defaults to global $post.
 * @return int|false Post parent ID (which can be 0 if there is no parent),
 *                   or false if the post does not exist.
 */
function wp_get_post_parent_id( $post = null ) {
	$post = get_post( $post );

	if ( ! $post || is_wp_error( $post ) ) {
		return false;
	}

	return (int) $post->post_parent;
}

/**
 * Checks the given subset of the post hierarchy for hierarchy loops.
 *
 * Prevents loops from forming and breaks those that it finds. Attached
 * to the {@see 'wp_insert_post_parent'} filter.
 *
 * @since 3.1.0
 *
 * @see wp_find_hierarchy_loop()
 *
 * @param int $post_parent ID of the parent for the post we're checking.
 * @param int $post_id     ID of the post we're checking.
 * @return int The new post_parent for the post, 0 otherwise.
 */
function wp_check_post_hierarchy_for_loops( $post_parent, $post_id ) {
	// Nothing fancy here - bail.
	if ( ! $post_parent ) {
		return 0;
	}

	// New post can't cause a loop.
	if ( ! $post_id ) {
		return $post_parent;
	}

	// Can't be its own parent.
	if ( $post_parent == $post_id ) {
		return 0;
	}

	// Now look for larger loops.
	$loop = wp_find_hierarchy_loop( 'wp_get_post_parent_id', $post_id, $post_parent );
	if ( ! $loop ) {
		return $post_parent; // No loop.
	}

	// Setting $post_parent to the given value causes a loop.
	if ( isset( $loop[ $post_id ] ) ) {
		return 0;
	}

	// There's a loop, but it doesn't contain $post_id. Break the loop.
	foreach ( array_keys( $loop ) as $loop_member ) {
		wp_update_post(
			array(
				'ID'          => $loop_member,
				'post_parent' => 0,
			)
		);
	}

	return $post_parent;
}

/**
 * Sets the post thumbnail (featured image) for the given post.
 *
 * @since 3.1.0
 *
 * @param int|WP_Post $post         Post ID or post object where thumbnail should be attached.
 * @param int         $thumbnail_id Thumbnail to attach.
 * @return int|bool True on success, false on failure.
 */
function set_post_thumbnail( $post, $thumbnail_id ) {
	$post         = get_post( $post );
	$thumbnail_id = absint( $thumbnail_id );
	if ( $post && $thumbnail_id && get_post( $thumbnail_id ) ) {
		if ( wp_get_attachment_image( $thumbnail_id, 'thumbnail' ) ) {
			return update_post_meta( $post->ID, '_thumbnail_id', $thumbnail_id );
		} else {
			return delete_post_meta( $post->ID, '_thumbnail_id' );
		}
	}
	return false;
}

/**
 * Removes the thumbnail (featured image) from the given post.
 *
 * @since 3.3.0
 *
 * @param int|WP_Post $post Post ID or post object from which the thumbnail should be removed.
 * @return bool True on success, false on failure.
 */
function delete_post_thumbnail( $post ) {
	$post = get_post( $post );
	if ( $post ) {
		return delete_post_meta( $post->ID, '_thumbnail_id' );
	}
	return false;
}

/**
 * Deletes auto-drafts for new posts that are > 7 days old.
 *
 * @since 3.4.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 */
function wp_delete_auto_drafts() {
	global $wpdb;

	// Cleanup old auto-drafts more than 7 days old.
	$old_posts = $wpdb->get_col( "SELECT ID FROM $wpdb->posts WHERE post_status = 'auto-draft' AND DATE_SUB( NOW(), INTERVAL 7 DAY ) > post_date" );
	foreach ( (array) $old_posts as $delete ) {
		// Force delete.
		wp_delete_post( $delete, true );
	}
}

/**
 * Queues posts for lazy-loading of term meta.
 *
 * @since 4.5.0
 *
 * @param WP_Post[] $posts Array of WP_Post objects.
 */
function wp_queue_posts_for_term_meta_lazyload( $posts ) {
	$post_type_taxonomies = array();
	$prime_post_terms     = array();
	foreach ( $posts as $post ) {
		if ( ! ( $post instanceof WP_Post ) ) {
			continue;
		}

		if ( ! isset( $post_type_taxonomies[ $post->post_type ] ) ) {
			$post_type_taxonomies[ $post->post_type ] = get_object_taxonomies( $post->post_type );
		}

		foreach ( $post_type_taxonomies[ $post->post_type ] as $taxonomy ) {
			$prime_post_terms[ $taxonomy ][] = $post->ID;
		}
	}

	$term_ids = array();
	if ( $prime_post_terms ) {
		foreach ( $prime_post_terms as $taxonomy => $post_ids ) {
			$cached_term_ids = wp_cache_get_multiple( $post_ids, "{$taxonomy}_relationships" );
			if ( is_array( $cached_term_ids ) ) {
				$cached_term_ids = array_filter( $cached_term_ids );
				foreach ( $cached_term_ids as $_term_ids ) {
					// Backward compatibility for if a plugin is putting objects into the cache, rather than IDs.
					foreach ( $_term_ids as $term_id ) {
						if ( is_numeric( $term_id ) ) {
							$term_ids[] = (int) $term_id;
						} elseif ( isset( $term_id->term_id ) ) {
							$term_ids[] = (int) $term_id->term_id;
						}
					}
				}
			}
		}
		$term_ids = array_unique( $term_ids );
	}

	wp_lazyload_term_meta( $term_ids );
}

/**
 * Updates the custom taxonomies' term counts when a post's status is changed.
 *
 * For example, default posts term counts (for custom taxonomies) don't include
 * private / draft posts.
 *
 * @since 3.3.0
 * @access private
 *
 * @param string  $new_status New post status.
 * @param string  $old_status Old post status.
 * @param WP_Post $post       Post object.
 */
function _update_term_count_on_transition_post_status( $new_status, $old_status, $post ) {
	// Update counts for the post's terms.
	foreach ( (array) get_object_taxonomies( $post->post_type ) as $taxonomy ) {
		$tt_ids = wp_get_object_terms( $post->ID, $taxonomy, array( 'fields' => 'tt_ids' ) );
		wp_update_term_count( $tt_ids, $taxonomy );
	}
}

/**
 * Adds any posts from the given IDs to the cache that do not already exist in cache.
 *
 * @since 3.4.0
 * @since 6.1.0 This function is no longer marked as "private".
 *
 * @see update_post_cache()
 * @see update_postmeta_cache()
 * @see update_object_term_cache()
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param int[] $ids               ID list.
 * @param bool  $update_term_cache Optional. Whether to update the term cache. Default true.
 * @param bool  $update_meta_cache Optional. Whether to update the meta cache. Default true.
 */
function _prime_post_caches( $ids, $update_term_cache = true, $update_meta_cache = true ) {
	global $wpdb;

	$non_cached_ids = _get_non_cached_ids( $ids, 'posts' );
	if ( ! empty( $non_cached_ids ) ) {
		$fresh_posts = $wpdb->get_results( sprintf( "SELECT $wpdb->posts.* FROM $wpdb->posts WHERE ID IN (%s)", implode( ',', $non_cached_ids ) ) );

		if ( $fresh_posts ) {
			// Despite the name, update_post_cache() expects an array rather than a single post.
			update_post_cache( $fresh_posts );
		}
	}

	if ( $update_meta_cache ) {
		update_postmeta_cache( $ids );
	}

	if ( $update_term_cache ) {
		$post_types = array_map( 'get_post_type', $ids );
		$post_types = array_unique( $post_types );
		update_object_term_cache( $ids, $post_types );
	}
}

/**
 * Prime the cache containing the parent ID of various post objects.
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @since 6.4.0
 *
 * @param int[] $ids ID list.
 */
function _prime_post_parent_id_caches( array $ids ) {
	global $wpdb;

	$ids = array_filter( $ids, '_validate_cache_id' );
	$ids = array_unique( array_map( 'intval', $ids ), SORT_NUMERIC );

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

	$cache_keys = array();
	foreach ( $ids as $id ) {
		$cache_keys[ $id ] = 'post_parent:' . (string) $id;
	}

	$cached_data = wp_cache_get_multiple( array_values( $cache_keys ), 'posts' );

	$non_cached_ids = array();
	foreach ( $cache_keys as $id => $cache_key ) {
		if ( false === $cached_data[ $cache_key ] ) {
			$non_cached_ids[] = $id;
		}
	}

	if ( ! empty( $non_cached_ids ) ) {
		$fresh_posts = $wpdb->get_results( sprintf( "SELECT $wpdb->posts.ID, $wpdb->posts.post_parent FROM $wpdb->posts WHERE ID IN (%s)", implode( ',', $non_cached_ids ) ) );

		if ( $fresh_posts ) {
			$post_parent_data = array();
			foreach ( $fresh_posts as $fresh_post ) {
				$post_parent_data[ 'post_parent:' . (string) $fresh_post->ID ] = (int) $fresh_post->post_parent;
			}

			wp_cache_add_multiple( $post_parent_data, 'posts' );
		}
	}
}

/**
 * Adds a suffix if any trashed posts have a given slug.
 *
 * Store its desired (i.e. current) slug so it can try to reclaim it
 * if the post is untrashed.
 *
 * For internal use.
 *
 * @since 4.5.0
 * @access private
 *
 * @param string $post_name Post slug.
 * @param int    $post_id   Optional. Post ID that should be ignored. Default 0.
 */
function wp_add_trashed_suffix_to_post_name_for_trashed_posts( $post_name, $post_id = 0 ) {
	$trashed_posts_with_desired_slug = get_posts(
		array(
			'name'         => $post_name,
			'post_status'  => 'trash',
			'post_type'    => 'any',
			'nopaging'     => true,
			'post__not_in' => array( $post_id ),
		)
	);

	if ( ! empty( $trashed_posts_with_desired_slug ) ) {
		foreach ( $trashed_posts_with_desired_slug as $_post ) {
			wp_add_trashed_suffix_to_post_name_for_post( $_post );
		}
	}
}

/**
 * Adds a trashed suffix for a given post.
 *
 * Store its desired (i.e. current) slug so it can try to reclaim it
 * if the post is untrashed.
 *
 * For internal use.
 *
 * @since 4.5.0
 * @access private
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param WP_Post $post The post.
 * @return string New slug for the post.
 */
function wp_add_trashed_suffix_to_post_name_for_post( $post ) {
	global $wpdb;

	$post = get_post( $post );

	if ( str_ends_with( $post->post_name, '__trashed' ) ) {
		return $post->post_name;
	}
	add_post_meta( $post->ID, '_wp_desired_post_slug', $post->post_name );
	$post_name = _truncate_post_slug( $post->post_name, 191 ) . '__trashed';
	$wpdb->update( $wpdb->posts, array( 'post_name' => $post_name ), array( 'ID' => $post->ID ) );
	clean_post_cache( $post->ID );
	return $post_name;
}

/**
 * Sets the last changed time for the 'posts' cache group.
 *
 * @since 5.0.0
 */
function wp_cache_set_posts_last_changed() {
	wp_cache_set_last_changed( 'posts' );
}

/**
 * Gets all available post MIME types for a given post type.
 *
 * @since 2.5.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param string $type
 * @return string[] An array of MIME types.
 */
function get_available_post_mime_types( $type = 'attachment' ) {
	global $wpdb;

	/**
	 * Filters the list of available post MIME types for the given post type.
	 *
	 * @since 6.4.0
	 *
	 * @param string[]|null $mime_types An array of MIME types. Default null.
	 * @param string        $type       The post type name. Usually 'attachment' but can be any post type.
	 */
	$mime_types = apply_filters( 'pre_get_available_post_mime_types', null, $type );

	if ( ! is_array( $mime_types ) ) {
		$mime_types = $wpdb->get_col( $wpdb->prepare( "SELECT DISTINCT post_mime_type FROM $wpdb->posts WHERE post_type = %s", $type ) );
	}

	return $mime_types;
}

/**
 * Retrieves the path to an uploaded image file.
 *
 * Similar to `get_attached_file()` however some images may have been processed after uploading
 * to make them suitable for web use. In this case the attached "full" size file is usually replaced
 * with a scaled down version of the original image. This function always returns the path
 * to the originally uploaded image file.
 *
 * @since 5.3.0
 * @since 5.4.0 Added the `$unfiltered` parameter.
 *
 * @param int  $attachment_id Attachment ID.
 * @param bool $unfiltered Optional. Passed through to `get_attached_file()`. Default false.
 * @return string|false Path to the original image file or false if the attachment is not an image.
 */
function wp_get_original_image_path( $attachment_id, $unfiltered = false ) {
	if ( ! wp_attachment_is_image( $attachment_id ) ) {
		return false;
	}

	$image_meta = wp_get_attachment_metadata( $attachment_id );
	$image_file = get_attached_file( $attachment_id, $unfiltered );

	if ( empty( $image_meta['original_image'] ) ) {
		$original_image = $image_file;
	} else {
		$original_image = path_join( dirname( $image_file ), $image_meta['original_image'] );
	}

	/**
	 * Filters the path to the original image.
	 *
	 * @since 5.3.0
	 *
	 * @param string $original_image Path to original image file.
	 * @param int    $attachment_id  Attachment ID.
	 */
	return apply_filters( 'wp_get_original_image_path', $original_image, $attachment_id );
}

/**
 * Retrieves the URL to an original attachment image.
 *
 * Similar to `wp_get_attachment_url()` however some images may have been
 * processed after uploading. In this case this function returns the URL
 * to the originally uploaded image file.
 *
 * @since 5.3.0
 *
 * @param int $attachment_id Attachment post ID.
 * @return string|false Attachment image URL, false on error or if the attachment is not an image.
 */
function wp_get_original_image_url( $attachment_id ) {
	if ( ! wp_attachment_is_image( $attachment_id ) ) {
		return false;
	}

	$image_url = wp_get_attachment_url( $attachment_id );

	if ( ! $image_url ) {
		return false;
	}

	$image_meta = wp_get_attachment_metadata( $attachment_id );

	if ( empty( $image_meta['original_image'] ) ) {
		$original_image_url = $image_url;
	} else {
		$original_image_url = path_join( dirname( $image_url ), $image_meta['original_image'] );
	}

	/**
	 * Filters the URL to the original attachment image.
	 *
	 * @since 5.3.0
	 *
	 * @param string $original_image_url URL to original image.
	 * @param int    $attachment_id      Attachment ID.
	 */
	return apply_filters( 'wp_get_original_image_url', $original_image_url, $attachment_id );
}

/**
 * Filters callback which sets the status of an untrashed post to its previous status.
 *
 * This can be used as a callback on the `wp_untrash_post_status` filter.
 *
 * @since 5.6.0
 *
 * @param string $new_status      The new status of the post being restored.
 * @param int    $post_id         The ID of the post being restored.
 * @param string $previous_status The status of the post at the point where it was trashed.
 * @return string The new status of the post.
 */
function wp_untrash_post_set_previous_status( $new_status, $post_id, $previous_status ) {
	return $previous_status;
}

/**
 * Returns whether the post can be edited in the block editor.
 *
 * @since 5.0.0
 * @since 6.1.0 Moved to wp-includes from wp-admin.
 *
 * @param int|WP_Post $post Post ID or WP_Post object.
 * @return bool Whether the post can be edited in the block editor.
 */
function use_block_editor_for_post( $post ) {
	$post = get_post( $post );

	if ( ! $post ) {
		return false;
	}

	// We're in the meta box loader, so don't use the block editor.
	if ( is_admin() && isset( $_GET['meta-box-loader'] ) ) {
		check_admin_referer( 'meta-box-loader', 'meta-box-loader-nonce' );
		return false;
	}

	$use_block_editor = use_block_editor_for_post_type( $post->post_type );

	/**
	 * Filters whether a post is able to be edited in the block editor.
	 *
	 * @since 5.0.0
	 *
	 * @param bool    $use_block_editor Whether the post can be edited or not.
	 * @param WP_Post $post             The post being checked.
	 */
	return apply_filters( 'use_block_editor_for_post', $use_block_editor, $post );
}

/**
 * Returns whether a post type is compatible with the block editor.
 *
 * The block editor depends on the REST API, and if the post type is not shown in the
 * REST API, then it won't work with the block editor.
 *
 * @since 5.0.0
 * @since 6.1.0 Moved to wp-includes from wp-admin.
 *
 * @param string $post_type The post type.
 * @return bool Whether the post type can be edited with the block editor.
 */
function use_block_editor_for_post_type( $post_type ) {
	if ( ! post_type_exists( $post_type ) ) {
		return false;
	}

	if ( ! post_type_supports( $post_type, 'editor' ) ) {
		return false;
	}

	$post_type_object = get_post_type_object( $post_type );
	if ( $post_type_object && ! $post_type_object->show_in_rest ) {
		return false;
	}

	/**
	 * Filters whether a post is able to be edited in the block editor.
	 *
	 * @since 5.0.0
	 *
	 * @param bool   $use_block_editor  Whether the post type can be edited or not. Default true.
	 * @param string $post_type         The post type being checked.
	 */
	return apply_filters( 'use_block_editor_for_post_type', true, $post_type );
}

/**
 * Registers any additional post meta fields.
 *
 * @since 6.3.0 Adds `wp_pattern_sync_status` meta field to the wp_block post type so an unsynced option can be added.
 *
 * @link https://github.com/WordPress/gutenberg/pull/51144
 */
function wp_create_initial_post_meta() {
	register_post_meta(
		'wp_block',
		'wp_pattern_sync_status',
		array(
			'sanitize_callback' => 'sanitize_text_field',
			'single'            => true,
			'type'              => 'string',
			'show_in_rest'      => array(
				'schema' => array(
					'type' => 'string',
					'enum' => array( 'partial', 'unsynced' ),
				),
			),
		)
	);
}
language.
		 */
		$subset = _x( 'no-subset', 'Open Sans font: add new subset (greek, cyrillic, vietnamese)' );

		if ( 'cyrillic' === $subset ) {
			$subsets .= ',cyrillic,cyrillic-ext';
		} elseif ( 'greek' === $subset ) {
			$subsets .= ',greek,greek-ext';
		} elseif ( 'vietnamese' === $subset ) {
			$subsets .= ',vietnamese';
		}

		// Hotlink Open Sans, for now.
		$open_sans_font_url = "https://fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,600italic,300,400,600&subset=$subsets&display=fallback";
	}

	// Register a stylesheet for the selected admin color scheme.
	$styles->add( 'colors', true, array( 'wp-admin', 'buttons' ) );

	$suffix = SCRIPT_DEBUG ? '' : '.min';

	// Admin CSS.
	$styles->add( 'common', "/wp-admin/css/common$suffix.css" );
	$styles->add( 'forms', "/wp-admin/css/forms$suffix.css" );
	$styles->add( 'admin-menu', "/wp-admin/css/admin-menu$suffix.css" );
	$styles->add( 'dashboard', "/wp-admin/css/dashboard$suffix.css" );
	$styles->add( 'list-tables', "/wp-admin/css/list-tables$suffix.css" );
	$styles->add( 'edit', "/wp-admin/css/edit$suffix.css" );
	$styles->add( 'revisions', "/wp-admin/css/revisions$suffix.css" );
	$styles->add( 'media', "/wp-admin/css/media$suffix.css" );
	$styles->add( 'themes', "/wp-admin/css/themes$suffix.css" );
	$styles->add( 'about', "/wp-admin/css/about$suffix.css" );
	$styles->add( 'nav-menus', "/wp-admin/css/nav-menus$suffix.css" );
	$styles->add( 'widgets', "/wp-admin/css/widgets$suffix.css", array( 'wp-pointer' ) );
	$styles->add( 'site-icon', "/wp-admin/css/site-icon$suffix.css" );
	$styles->add( 'l10n', "/wp-admin/css/l10n$suffix.css" );
	$styles->add( 'code-editor', "/wp-admin/css/code-editor$suffix.css", array( 'wp-codemirror' ) );
	$styles->add( 'site-health', "/wp-admin/css/site-health$suffix.css" );

	$styles->add( 'wp-admin', false, array( 'dashicons', 'common', 'forms', 'admin-menu', 'dashboard', 'list-tables', 'edit', 'revisions', 'media', 'themes', 'about', 'nav-menus', 'widgets', 'site-icon', 'l10n' ) );

	$styles->add( 'login', "/wp-admin/css/login$suffix.css", array( 'dashicons', 'buttons', 'forms', 'l10n' ) );
	$styles->add( 'install', "/wp-admin/css/install$suffix.css", array( 'dashicons', 'buttons', 'forms', 'l10n' ) );
	$styles->add( 'wp-color-picker', "/wp-admin/css/color-picker$suffix.css" );
	$styles->add( 'customize-controls', "/wp-admin/css/customize-controls$suffix.css", array( 'wp-admin', 'colors', 'imgareaselect' ) );
	$styles->add( 'customize-widgets', "/wp-admin/css/customize-widgets$suffix.css", array( 'wp-admin', 'colors' ) );
	$styles->add( 'customize-nav-menus', "/wp-admin/css/customize-nav-menus$suffix.css", array( 'wp-admin', 'colors' ) );

	// Common dependencies.
	$styles->add( 'buttons', "/wp-includes/css/buttons$suffix.css" );
	$styles->add( 'dashicons', "/wp-includes/css/dashicons$suffix.css" );

	// Includes CSS.
	$styles->add( 'admin-bar', "/wp-includes/css/admin-bar$suffix.css", array( 'dashicons' ) );
	$styles->add( 'wp-auth-check', "/wp-includes/css/wp-auth-check$suffix.css", array( 'dashicons' ) );
	$styles->add( 'editor-buttons', "/wp-includes/css/editor$suffix.css", array( 'dashicons' ) );
	$styles->add( 'media-views', "/wp-includes/css/media-views$suffix.css", array( 'buttons', 'dashicons', 'wp-mediaelement' ) );
	$styles->add( 'wp-pointer', "/wp-includes/css/wp-pointer$suffix.css", array( 'dashicons' ) );
	$styles->add( 'customize-preview', "/wp-includes/css/customize-preview$suffix.css", array( 'dashicons' ) );
	$styles->add( 'wp-embed-template-ie', "/wp-includes/css/wp-embed-template-ie$suffix.css" );
	$styles->add_data( 'wp-embed-template-ie', 'conditional', 'lte IE 8' );

	// External libraries and friends.
	$styles->add( 'imgareaselect', '/wp-includes/js/imgareaselect/imgareaselect.css', array(), '0.9.8' );
	$styles->add( 'wp-jquery-ui-dialog', "/wp-includes/css/jquery-ui-dialog$suffix.css", array( 'dashicons' ) );
	$styles->add( 'mediaelement', '/wp-includes/js/mediaelement/mediaelementplayer-legacy.min.css', array(), '4.2.17' );
	$styles->add( 'wp-mediaelement', "/wp-includes/js/mediaelement/wp-mediaelement$suffix.css", array( 'mediaelement' ) );
	$styles->add( 'thickbox', '/wp-includes/js/thickbox/thickbox.css', array( 'dashicons' ) );
	$styles->add( 'wp-codemirror', '/wp-includes/js/codemirror/codemirror.min.css', array(), '5.29.1-alpha-ee20357' );

	// Deprecated CSS.
	$styles->add( 'deprecated-media', "/wp-admin/css/deprecated-media$suffix.css" );
	$styles->add( 'farbtastic', "/wp-admin/css/farbtastic$suffix.css", array(), '1.3u1' );
	$styles->add( 'jcrop', '/wp-includes/js/jcrop/jquery.Jcrop.min.css', array(), '0.9.15' );
	$styles->add( 'colors-fresh', false, array( 'wp-admin', 'buttons' ) ); // Old handle.
	$styles->add( 'open-sans', $open_sans_font_url ); // No longer used in core as of 4.6.

	// Noto Serif is no longer used by core, but may be relied upon by themes and plugins.
	$fonts_url = '';

	/*
	 * translators: Use this to specify the proper Google Font name and variants
	 * to load that is supported by your language. Do not translate.
	 * Set to 'off' to disable loading.
	 */
	$font_family = _x( 'Noto Serif:400,400i,700,700i', 'Google Font Name and Variants' );
	if ( 'off' !== $font_family ) {
		$fonts_url = 'https://fonts.googleapis.com/css?family=' . urlencode( $font_family );
	}
	$styles->add( 'wp-editor-font', $fonts_url ); // No longer used in core as of 5.7.
	$block_library_theme_path = WPINC . "/css/dist/block-library/theme$suffix.css";
	$styles->add( 'wp-block-library-theme', "/$block_library_theme_path" );
	$styles->add_data( 'wp-block-library-theme', 'path', ABSPATH . $block_library_theme_path );

	$styles->add(
		'wp-reset-editor-styles',
		"/wp-includes/css/dist/block-library/reset$suffix.css",
		array( 'common', 'forms' ) // Make sure the reset is loaded after the default WP Admin styles.
	);

	$styles->add(
		'wp-editor-classic-layout-styles',
		"/wp-includes/css/dist/edit-post/classic$suffix.css",
		array()
	);

	$styles->add(
		'wp-block-editor-content',
		"/wp-includes/css/dist/block-editor/content$suffix.css",
		array( 'wp-components' )
	);

	$wp_edit_blocks_dependencies = array(
		'wp-components',
		'wp-editor',
		/*
		 * This needs to be added before the block library styles,
		 * The block library styles override the "reset" styles.
		 */
		'wp-reset-editor-styles',
		'wp-block-library',
		'wp-reusable-blocks',
		'wp-block-editor-content',
		'wp-patterns',
	);

	// Only load the default layout and margin styles for themes without theme.json file.
	if ( ! wp_theme_has_theme_json() ) {
		$wp_edit_blocks_dependencies[] = 'wp-editor-classic-layout-styles';
	}

	if (
		current_theme_supports( 'wp-block-styles' ) &&
		( ! is_array( $editor_styles ) || count( $editor_styles ) === 0 )
	) {
		/*
		 * Include opinionated block styles if the theme supports block styles and
		 * no $editor_styles are declared, so the editor never appears broken.
		 */
		$wp_edit_blocks_dependencies[] = 'wp-block-library-theme';
	}

	$styles->add(
		'wp-edit-blocks',
		"/wp-includes/css/dist/block-library/editor$suffix.css",
		$wp_edit_blocks_dependencies
	);

	$package_styles = array(
		'block-editor'         => array( 'wp-components', 'wp-preferences' ),
		'block-library'        => array(),
		'block-directory'      => array(),
		'components'           => array(),
		'commands'             => array(),
		'edit-post'            => array(
			'wp-components',
			'wp-block-editor',
			'wp-editor',
			'wp-edit-blocks',
			'wp-block-library',
			'wp-commands',
			'wp-preferences',
		),
		'editor'               => array(
			'wp-components',
			'wp-block-editor',
			'wp-reusable-blocks',
			'wp-patterns',
			'wp-preferences',
		),
		'format-library'       => array(),
		'list-reusable-blocks' => array( 'wp-components' ),
		'reusable-blocks'      => array( 'wp-components' ),
		'patterns'             => array( 'wp-components' ),
		'preferences'          => array( 'wp-components' ),
		'nux'                  => array( 'wp-components' ),
		'widgets'              => array(
			'wp-components',
		),
		'edit-widgets'         => array(
			'wp-widgets',
			'wp-block-editor',
			'wp-edit-blocks',
			'wp-block-library',
			'wp-reusable-blocks',
			'wp-patterns',
			'wp-preferences',
		),
		'customize-widgets'    => array(
			'wp-widgets',
			'wp-block-editor',
			'wp-edit-blocks',
			'wp-block-library',
			'wp-reusable-blocks',
			'wp-patterns',
			'wp-preferences',
		),
		'edit-site'            => array(
			'wp-components',
			'wp-block-editor',
			'wp-edit-blocks',
			'wp-commands',
			'wp-preferences',
		),
	);

	foreach ( $package_styles as $package => $dependencies ) {
		$handle = 'wp-' . $package;
		$path   = "/wp-includes/css/dist/$package/style$suffix.css";

		if ( 'block-library' === $package && wp_should_load_separate_core_block_assets() ) {
			$path = "/wp-includes/css/dist/$package/common$suffix.css";
		}
		$styles->add( $handle, $path, $dependencies );
		$styles->add_data( $handle, 'path', ABSPATH . $path );
	}

	// RTL CSS.
	$rtl_styles = array(
		// Admin CSS.
		'common',
		'forms',
		'admin-menu',
		'dashboard',
		'list-tables',
		'edit',
		'revisions',
		'media',
		'themes',
		'about',
		'nav-menus',
		'widgets',
		'site-icon',
		'l10n',
		'install',
		'wp-color-picker',
		'customize-controls',
		'customize-widgets',
		'customize-nav-menus',
		'customize-preview',
		'login',
		'site-health',
		// Includes CSS.
		'buttons',
		'admin-bar',
		'wp-auth-check',
		'editor-buttons',
		'media-views',
		'wp-pointer',
		'wp-jquery-ui-dialog',
		// Package styles.
		'wp-reset-editor-styles',
		'wp-editor-classic-layout-styles',
		'wp-block-library-theme',
		'wp-edit-blocks',
		'wp-block-editor',
		'wp-block-library',
		'wp-block-directory',
		'wp-commands',
		'wp-components',
		'wp-customize-widgets',
		'wp-edit-post',
		'wp-edit-site',
		'wp-edit-widgets',
		'wp-editor',
		'wp-format-library',
		'wp-list-reusable-blocks',
		'wp-reusable-blocks',
		'wp-patterns',
		'wp-nux',
		'wp-widgets',
		// Deprecated CSS.
		'deprecated-media',
		'farbtastic',
	);

	foreach ( $rtl_styles as $rtl_style ) {
		$styles->add_data( $rtl_style, 'rtl', 'replace' );
		if ( $suffix ) {
			$styles->add_data( $rtl_style, 'suffix', $suffix );
		}
	}
}

/**
 * Reorders JavaScript scripts array to place prototype before jQuery.
 *
 * @since 2.3.1
 *
 * @param string[] $js_array JavaScript scripts array
 * @return string[] Reordered array, if needed.
 */
function wp_prototype_before_jquery( $js_array ) {
	$prototype = array_search( 'prototype', $js_array, true );

	if ( false === $prototype ) {
		return $js_array;
	}

	$jquery = array_search( 'jquery', $js_array, true );

	if ( false === $jquery ) {
		return $js_array;
	}

	if ( $prototype < $jquery ) {
		return $js_array;
	}

	unset( $js_array[ $prototype ] );

	array_splice( $js_array, $jquery, 0, 'prototype' );

	return $js_array;
}

/**
 * Loads localized data on print rather than initialization.
 *
 * These localizations require information that may not be loaded even by init.
 *
 * @since 2.5.0
 *
 * @global array $shortcode_tags
 */
function wp_just_in_time_script_localization() {

	wp_localize_script(
		'autosave',
		'autosaveL10n',
		array(
			'autosaveInterval' => AUTOSAVE_INTERVAL,
			'blog_id'          => get_current_blog_id(),
		)
	);

	wp_localize_script(
		'mce-view',
		'mceViewL10n',
		array(
			'shortcodes' => ! empty( $GLOBALS['shortcode_tags'] ) ? array_keys( $GLOBALS['shortcode_tags'] ) : array(),
		)
	);

	wp_localize_script(
		'word-count',
		'wordCountL10n',
		array(
			'type'       => wp_get_word_count_type(),
			'shortcodes' => ! empty( $GLOBALS['shortcode_tags'] ) ? array_keys( $GLOBALS['shortcode_tags'] ) : array(),
		)
	);
}

/**
 * Localizes the jQuery UI datepicker.
 *
 * @since 4.6.0
 *
 * @link https://api.jqueryui.com/datepicker/#options
 *
 * @global WP_Locale $wp_locale WordPress date and time locale object.
 */
function wp_localize_jquery_ui_datepicker() {
	global $wp_locale;

	if ( ! wp_script_is( 'jquery-ui-datepicker', 'enqueued' ) ) {
		return;
	}

	// Convert the PHP date format into jQuery UI's format.
	$datepicker_date_format = str_replace(
		array(
			'd',
			'j',
			'l',
			'z', // Day.
			'F',
			'M',
			'n',
			'm', // Month.
			'Y',
			'y', // Year.
		),
		array(
			'dd',
			'd',
			'DD',
			'o',
			'MM',
			'M',
			'm',
			'mm',
			'yy',
			'y',
		),
		get_option( 'date_format' )
	);

	$datepicker_defaults = wp_json_encode(
		array(
			'closeText'       => __( 'Close' ),
			'currentText'     => __( 'Today' ),
			'monthNames'      => array_values( $wp_locale->month ),
			'monthNamesShort' => array_values( $wp_locale->month_abbrev ),
			'nextText'        => __( 'Next' ),
			'prevText'        => __( 'Previous' ),
			'dayNames'        => array_values( $wp_locale->weekday ),
			'dayNamesShort'   => array_values( $wp_locale->weekday_abbrev ),
			'dayNamesMin'     => array_values( $wp_locale->weekday_initial ),
			'dateFormat'      => $datepicker_date_format,
			'firstDay'        => absint( get_option( 'start_of_week' ) ),
			'isRTL'           => $wp_locale->is_rtl(),
		)
	);

	wp_add_inline_script( 'jquery-ui-datepicker', "jQuery(function(jQuery){jQuery.datepicker.setDefaults({$datepicker_defaults});});" );
}

/**
 * Localizes community events data that needs to be passed to dashboard.js.
 *
 * @since 4.8.0
 */
function wp_localize_community_events() {
	if ( ! wp_script_is( 'dashboard' ) ) {
		return;
	}

	require_once ABSPATH . 'wp-admin/includes/class-wp-community-events.php';

	$user_id            = get_current_user_id();
	$saved_location     = get_user_option( 'community-events-location', $user_id );
	$saved_ip_address   = isset( $saved_location['ip'] ) ? $saved_location['ip'] : false;
	$current_ip_address = WP_Community_Events::get_unsafe_client_ip();

	/*
	 * If the user's location is based on their IP address, then update their
	 * location when their IP address changes. This allows them to see events
	 * in their current city when travelling. Otherwise, they would always be
	 * shown events in the city where they were when they first loaded the
	 * Dashboard, which could have been months or years ago.
	 */
	if ( $saved_ip_address && $current_ip_address && $current_ip_address !== $saved_ip_address ) {
		$saved_location['ip'] = $current_ip_address;
		update_user_meta( $user_id, 'community-events-location', $saved_location );
	}

	$events_client = new WP_Community_Events( $user_id, $saved_location );

	wp_localize_script(
		'dashboard',
		'communityEventsData',
		array(
			'nonce'       => wp_create_nonce( 'community_events' ),
			'cache'       => $events_client->get_cached_events(),
			'time_format' => get_option( 'time_format' ),
		)
	);
}

/**
 * Administration Screen CSS for changing the styles.
 *
 * If installing the 'wp-admin/' directory will be replaced with './'.
 *
 * The $_wp_admin_css_colors global manages the Administration Screens CSS
 * stylesheet that is loaded. The option that is set is 'admin_color' and is the
 * color and key for the array. The value for the color key is an object with
 * a 'url' parameter that has the URL path to the CSS file.
 *
 * The query from $src parameter will be appended to the URL that is given from
 * the $_wp_admin_css_colors array value URL.
 *
 * @since 2.6.0
 *
 * @global array $_wp_admin_css_colors
 *
 * @param string $src    Source URL.
 * @param string $handle Either 'colors' or 'colors-rtl'.
 * @return string|false URL path to CSS stylesheet for Administration Screens.
 */
function wp_style_loader_src( $src, $handle ) {
	global $_wp_admin_css_colors;

	if ( wp_installing() ) {
		return preg_replace( '#^wp-admin/#', './', $src );
	}

	if ( 'colors' === $handle ) {
		$color = get_user_option( 'admin_color' );

		if ( empty( $color ) || ! isset( $_wp_admin_css_colors[ $color ] ) ) {
			$color = 'fresh';
		}

		$color = $_wp_admin_css_colors[ $color ];
		$url   = $color->url;

		if ( ! $url ) {
			return false;
		}

		$parsed = parse_url( $src );
		if ( isset( $parsed['query'] ) && $parsed['query'] ) {
			wp_parse_str( $parsed['query'], $qv );
			$url = add_query_arg( $qv, $url );
		}

		return $url;
	}

	return $src;
}

/**
 * Prints the script queue in the HTML head on admin pages.
 *
 * Postpones the scripts that were queued for the footer.
 * print_footer_scripts() is called in the footer to print these scripts.
 *
 * @since 2.8.0
 *
 * @see wp_print_scripts()
 *
 * @global bool $concatenate_scripts
 *
 * @return array
 */
function print_head_scripts() {
	global $concatenate_scripts;

	if ( ! did_action( 'wp_print_scripts' ) ) {
		/** This action is documented in wp-includes/functions.wp-scripts.php */
		do_action( 'wp_print_scripts' );
	}

	$wp_scripts = wp_scripts();

	script_concat_settings();
	$wp_scripts->do_concat = $concatenate_scripts;
	$wp_scripts->do_head_items();

	/**
	 * Filters whether to print the head scripts.
	 *
	 * @since 2.8.0
	 *
	 * @param bool $print Whether to print the head scripts. Default true.
	 */
	if ( apply_filters( 'print_head_scripts', true ) ) {
		_print_scripts();
	}

	$wp_scripts->reset();
	return $wp_scripts->done;
}

/**
 * Prints the scripts that were queued for the footer or too late for the HTML head.
 *
 * @since 2.8.0
 *
 * @global WP_Scripts $wp_scripts
 * @global bool       $concatenate_scripts
 *
 * @return array
 */
function print_footer_scripts() {
	global $wp_scripts, $concatenate_scripts;

	if ( ! ( $wp_scripts instanceof WP_Scripts ) ) {
		return array(); // No need to run if not instantiated.
	}
	script_concat_settings();
	$wp_scripts->do_concat = $concatenate_scripts;
	$wp_scripts->do_footer_items();

	/**
	 * Filters whether to print the footer scripts.
	 *
	 * @since 2.8.0
	 *
	 * @param bool $print Whether to print the footer scripts. Default true.
	 */
	if ( apply_filters( 'print_footer_scripts', true ) ) {
		_print_scripts();
	}

	$wp_scripts->reset();
	return $wp_scripts->done;
}

/**
 * Prints scripts (internal use only)
 *
 * @ignore
 *
 * @global WP_Scripts $wp_scripts
 * @global bool       $compress_scripts
 */
function _print_scripts() {
	global $wp_scripts, $compress_scripts;

	$zip = $compress_scripts ? 1 : 0;
	if ( $zip && defined( 'ENFORCE_GZIP' ) && ENFORCE_GZIP ) {
		$zip = 'gzip';
	}

	$concat    = trim( $wp_scripts->concat, ', ' );
	$type_attr = current_theme_supports( 'html5', 'script' ) ? '' : " type='text/javascript'";

	if ( $concat ) {
		if ( ! empty( $wp_scripts->print_code ) ) {
			echo "\n<script{$type_attr}>\n";
			echo "/* <![CDATA[ */\n"; // Not needed in HTML 5.
			echo $wp_scripts->print_code;
			echo "/* ]]> */\n";
			echo "</script>\n";
		}

		$concat       = str_split( $concat, 128 );
		$concatenated = '';

		foreach ( $concat as $key => $chunk ) {
			$concatenated .= "&load%5Bchunk_{$key}%5D={$chunk}";
		}

		$src = $wp_scripts->base_url . "/wp-admin/load-scripts.php?c={$zip}" . $concatenated . '&ver=' . $wp_scripts->default_version;
		echo "<script{$type_attr} src='" . esc_attr( $src ) . "'></script>\n";
	}

	if ( ! empty( $wp_scripts->print_html ) ) {
		echo $wp_scripts->print_html;
	}
}

/**
 * Prints the script queue in the HTML head on the front end.
 *
 * Postpones the scripts that were queued for the footer.
 * wp_print_footer_scripts() is called in the footer to print these scripts.
 *
 * @since 2.8.0
 *
 * @global WP_Scripts $wp_scripts
 *
 * @return array
 */
function wp_print_head_scripts() {
	global $wp_scripts;

	if ( ! did_action( 'wp_print_scripts' ) ) {
		/** This action is documented in wp-includes/functions.wp-scripts.php */
		do_action( 'wp_print_scripts' );
	}

	if ( ! ( $wp_scripts instanceof WP_Scripts ) ) {
		return array(); // No need to run if nothing is queued.
	}

	return print_head_scripts();
}

/**
 * Private, for use in *_footer_scripts hooks
 *
 * @since 3.3.0
 */
function _wp_footer_scripts() {
	print_late_styles();
	print_footer_scripts();
}

/**
 * Hooks to print the scripts and styles in the footer.
 *
 * @since 2.8.0
 */
function wp_print_footer_scripts() {
	/**
	 * Fires when footer scripts are printed.
	 *
	 * @since 2.8.0
	 */
	do_action( 'wp_print_footer_scripts' );
}

/**
 * Wrapper for do_action( 'wp_enqueue_scripts' ).
 *
 * Allows plugins to queue scripts for the front end using wp_enqueue_script().
 * Runs first in wp_head() where all is_home(), is_page(), etc. functions are available.
 *
 * @since 2.8.0
 */
function wp_enqueue_scripts() {
	/**
	 * Fires when scripts and styles are enqueued.
	 *
	 * @since 2.8.0
	 */
	do_action( 'wp_enqueue_scripts' );
}

/**
 * Prints the styles queue in the HTML head on admin pages.
 *
 * @since 2.8.0
 *
 * @global bool $concatenate_scripts
 *
 * @return array
 */
function print_admin_styles() {
	global $concatenate_scripts;

	$wp_styles = wp_styles();

	script_concat_settings();
	$wp_styles->do_concat = $concatenate_scripts;
	$wp_styles->do_items( false );

	/**
	 * Filters whether to print the admin styles.
	 *
	 * @since 2.8.0
	 *
	 * @param bool $print Whether to print the admin styles. Default true.
	 */
	if ( apply_filters( 'print_admin_styles', true ) ) {
		_print_styles();
	}

	$wp_styles->reset();
	return $wp_styles->done;
}

/**
 * Prints the styles that were queued too late for the HTML head.
 *
 * @since 3.3.0
 *
 * @global WP_Styles $wp_styles
 * @global bool      $concatenate_scripts
 *
 * @return array|void
 */
function print_late_styles() {
	global $wp_styles, $concatenate_scripts;

	if ( ! ( $wp_styles instanceof WP_Styles ) ) {
		return;
	}

	script_concat_settings();
	$wp_styles->do_concat = $concatenate_scripts;
	$wp_styles->do_footer_items();

	/**
	 * Filters whether to print the styles queued too late for the HTML head.
	 *
	 * @since 3.3.0
	 *
	 * @param bool $print Whether to print the 'late' styles. Default true.
	 */
	if ( apply_filters( 'print_late_styles', true ) ) {
		_print_styles();
	}

	$wp_styles->reset();
	return $wp_styles->done;
}

/**
 * Prints styles (internal use only).
 *
 * @ignore
 * @since 3.3.0
 *
 * @global bool $compress_css
 */
function _print_styles() {
	global $compress_css;

	$wp_styles = wp_styles();

	$zip = $compress_css ? 1 : 0;
	if ( $zip && defined( 'ENFORCE_GZIP' ) && ENFORCE_GZIP ) {
		$zip = 'gzip';
	}

	$concat    = trim( $wp_styles->concat, ', ' );
	$type_attr = current_theme_supports( 'html5', 'style' ) ? '' : ' type="text/css"';

	if ( $concat ) {
		$dir = $wp_styles->text_direction;
		$ver = $wp_styles->default_version;

		$concat       = str_split( $concat, 128 );
		$concatenated = '';

		foreach ( $concat as $key => $chunk ) {
			$concatenated .= "&load%5Bchunk_{$key}%5D={$chunk}";
		}

		$href = $wp_styles->base_url . "/wp-admin/load-styles.php?c={$zip}&dir={$dir}" . $concatenated . '&ver=' . $ver;
		echo "<link rel='stylesheet' href='" . esc_attr( $href ) . "'{$type_attr} media='all' />\n";

		if ( ! empty( $wp_styles->print_code ) ) {
			echo "<style{$type_attr}>\n";
			echo $wp_styles->print_code;
			echo "\n</style>\n";
		}
	}

	if ( ! empty( $wp_styles->print_html ) ) {
		echo $wp_styles->print_html;
	}
}

/**
 * Determines the concatenation and compression settings for scripts and styles.
 *
 * @since 2.8.0
 *
 * @global bool $concatenate_scripts
 * @global bool $compress_scripts
 * @global bool $compress_css
 */
function script_concat_settings() {
	global $concatenate_scripts, $compress_scripts, $compress_css;

	$compressed_output = ( ini_get( 'zlib.output_compression' ) || 'ob_gzhandler' === ini_get( 'output_handler' ) );

	$can_compress_scripts = ! wp_installing() && get_site_option( 'can_compress_scripts' );

	if ( ! isset( $concatenate_scripts ) ) {
		$concatenate_scripts = defined( 'CONCATENATE_SCRIPTS' ) ? CONCATENATE_SCRIPTS : true;
		if ( ( ! is_admin() && ! did_action( 'login_init' ) ) || ( defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ) ) {
			$concatenate_scripts = false;
		}
	}

	if ( ! isset( $compress_scripts ) ) {
		$compress_scripts = defined( 'COMPRESS_SCRIPTS' ) ? COMPRESS_SCRIPTS : true;
		if ( $compress_scripts && ( ! $can_compress_scripts || $compressed_output ) ) {
			$compress_scripts = false;
		}
	}

	if ( ! isset( $compress_css ) ) {
		$compress_css = defined( 'COMPRESS_CSS' ) ? COMPRESS_CSS : true;
		if ( $compress_css && ( ! $can_compress_scripts || $compressed_output ) ) {
			$compress_css = false;
		}
	}
}

/**
 * Handles the enqueueing of block scripts and styles that are common to both
 * the editor and the front-end.
 *
 * @since 5.0.0
 */
function wp_common_block_scripts_and_styles() {
	if ( is_admin() && ! wp_should_load_block_editor_scripts_and_styles() ) {
		return;
	}

	wp_enqueue_style( 'wp-block-library' );

	if ( current_theme_supports( 'wp-block-styles' ) && ! wp_should_load_separate_core_block_assets() ) {
		wp_enqueue_style( 'wp-block-library-theme' );
	}

	/**
	 * Fires after enqueuing block assets for both editor and front-end.
	 *
	 * Call `add_action` on any hook before 'wp_enqueue_scripts'.
	 *
	 * In the function call you supply, simply use `wp_enqueue_script` and
	 * `wp_enqueue_style` to add your functionality to the Gutenberg editor.
	 *
	 * @since 5.0.0
	 */
	do_action( 'enqueue_block_assets' );
}

/**
 * Applies a filter to the list of style nodes that comes from WP_Theme_JSON::get_style_nodes().
 *
 * This particular filter removes all of the blocks from the array.
 *
 * We want WP_Theme_JSON to be ignorant of the implementation details of how the CSS is being used.
 * This filter allows us to modify the output of WP_Theme_JSON depending on whether or not we are
 * loading separate assets, without making the class aware of that detail.
 *
 * @since 6.1.0
 *
 * @param array $nodes The nodes to filter.
 * @return array A filtered array of style nodes.
 */
function wp_filter_out_block_nodes( $nodes ) {
	return array_filter(
		$nodes,
		static function ( $node ) {
			return ! in_array( 'blocks', $node['path'], true );
		},
		ARRAY_FILTER_USE_BOTH
	);
}

/**
 * Enqueues the global styles defined via theme.json.
 *
 * @since 5.8.0
 */
function wp_enqueue_global_styles() {
	$separate_assets  = wp_should_load_separate_core_block_assets();
	$is_block_theme   = wp_is_block_theme();
	$is_classic_theme = ! $is_block_theme;

	/*
	 * Global styles should be printed in the head when loading all styles combined.
	 * The footer should only be used to print global styles for classic themes with separate core assets enabled.
	 *
	 * See https://core.trac.wordpress.org/ticket/53494.
	 */
	if (
		( $is_block_theme && doing_action( 'wp_footer' ) ) ||
		( $is_classic_theme && doing_action( 'wp_footer' ) && ! $separate_assets ) ||
		( $is_classic_theme && doing_action( 'wp_enqueue_scripts' ) && $separate_assets )
	) {
		return;
	}

	/*
	 * If loading the CSS for each block separately, then load the theme.json CSS conditionally.
	 * This removes the CSS from the global-styles stylesheet and adds it to the inline CSS for each block.
	 * This filter must be registered before calling wp_get_global_stylesheet();
	 */
	add_filter( 'wp_theme_json_get_style_nodes', 'wp_filter_out_block_nodes' );

	$stylesheet = wp_get_global_stylesheet();

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

	wp_register_style( 'global-styles', false );
	wp_add_inline_style( 'global-styles', $stylesheet );
	wp_enqueue_style( 'global-styles' );

	// Add each block as an inline css.
	wp_add_global_styles_for_blocks();
}

/**
 * Enqueues the global styles custom css defined via theme.json.
 *
 * @since 6.2.0
 */
function wp_enqueue_global_styles_custom_css() {
	if ( ! wp_is_block_theme() ) {
		return;
	}

	// Don't enqueue Customizer's custom CSS separately.
	remove_action( 'wp_head', 'wp_custom_css_cb', 101 );

	$custom_css  = wp_get_custom_css();
	$custom_css .= wp_get_global_styles_custom_css();

	if ( ! empty( $custom_css ) ) {
		wp_add_inline_style( 'global-styles', $custom_css );
	}
}

/**
 * Checks if the editor scripts and styles for all registered block types
 * should be enqueued on the current screen.
 *
 * @since 5.6.0
 *
 * @global WP_Screen $current_screen WordPress current screen object.
 *
 * @return bool Whether scripts and styles should be enqueued.
 */
function wp_should_load_block_editor_scripts_and_styles() {
	global $current_screen;

	$is_block_editor_screen = ( $current_screen instanceof WP_Screen ) && $current_screen->is_block_editor();

	/**
	 * Filters the flag that decides whether or not block editor scripts and styles
	 * are going to be enqueued on the current screen.
	 *
	 * @since 5.6.0
	 *
	 * @param bool $is_block_editor_screen Current value of the flag.
	 */
	return apply_filters( 'should_load_block_editor_scripts_and_styles', $is_block_editor_screen );
}

/**
 * Checks whether separate styles should be loaded for core blocks on-render.
 *
 * When this function returns true, other functions ensure that core blocks
 * only load their assets on-render, and each block loads its own, individual
 * assets. Third-party blocks only load their assets when rendered.
 *
 * When this function returns false, all core block assets are loaded regardless
 * of whether they are rendered in a page or not, because they are all part of
 * the `block-library/style.css` file. Assets for third-party blocks are always
 * enqueued regardless of whether they are rendered or not.
 *
 * This only affects front end and not the block editor screens.
 *
 * @see wp_enqueue_registered_block_scripts_and_styles()
 * @see register_block_style_handle()
 *
 * @since 5.8.0
 *
 * @return bool Whether separate assets will be loaded.
 */
function wp_should_load_separate_core_block_assets() {
	if ( is_admin() || is_feed() || wp_is_rest_endpoint() ) {
		return false;
	}

	/**
	 * Filters whether block styles should be loaded separately.
	 *
	 * Returning false loads all core block assets, regardless of whether they are rendered
	 * in a page or not. Returning true loads core block assets only when they are rendered.
	 *
	 * @since 5.8.0
	 *
	 * @param bool $load_separate_assets Whether separate assets will be loaded.
	 *                                   Default false (all block assets are loaded, even when not used).
	 */
	return apply_filters( 'should_load_separate_core_block_assets', false );
}

/**
 * Enqueues registered block scripts and styles, depending on current rendered
 * context (only enqueuing editor scripts while in context of the editor).
 *
 * @since 5.0.0
 *
 * @global WP_Screen $current_screen WordPress current screen object.
 */
function wp_enqueue_registered_block_scripts_and_styles() {
	global $current_screen;

	if ( wp_should_load_separate_core_block_assets() ) {
		return;
	}

	$load_editor_scripts_and_styles = is_admin() && wp_should_load_block_editor_scripts_and_styles();

	$block_registry = WP_Block_Type_Registry::get_instance();
	foreach ( $block_registry->get_all_registered() as $block_name => $block_type ) {
		// Front-end and editor styles.
		foreach ( $block_type->style_handles as $style_handle ) {
			wp_enqueue_style( $style_handle );
		}

		// Front-end and editor scripts.
		foreach ( $block_type->script_handles as $script_handle ) {
			wp_enqueue_script( $script_handle );
		}

		if ( $load_editor_scripts_and_styles ) {
			// Editor styles.
			foreach ( $block_type->editor_style_handles as $editor_style_handle ) {
				wp_enqueue_style( $editor_style_handle );
			}

			// Editor scripts.
			foreach ( $block_type->editor_script_handles as $editor_script_handle ) {
				wp_enqueue_script( $editor_script_handle );
			}
		}
	}
}

/**
 * Function responsible for enqueuing the styles required for block styles functionality on the editor and on the frontend.
 *
 * @since 5.3.0
 *
 * @global WP_Styles $wp_styles
 */
function enqueue_block_styles_assets() {
	global $wp_styles;

	$block_styles = WP_Block_Styles_Registry::get_instance()->get_all_registered();

	foreach ( $block_styles as $block_name => $styles ) {
		foreach ( $styles as $style_properties ) {
			if ( isset( $style_properties['style_handle'] ) ) {

				// If the site loads separate styles per-block, enqueue the stylesheet on render.
				if ( wp_should_load_separate_core_block_assets() ) {
					add_filter(
						'render_block',
						static function ( $html, $block ) use ( $block_name, $style_properties ) {
							if ( $block['blockName'] === $block_name ) {
								wp_enqueue_style( $style_properties['style_handle'] );
							}
							return $html;
						},
						10,
						2
					);
				} else {
					wp_enqueue_style( $style_properties['style_handle'] );
				}
			}
			if ( isset( $style_properties['inline_style'] ) ) {

				// Default to "wp-block-library".
				$handle = 'wp-block-library';

				// If the site loads separate styles per-block, check if the block has a stylesheet registered.
				if ( wp_should_load_separate_core_block_assets() ) {
					$block_stylesheet_handle = generate_block_asset_handle( $block_name, 'style' );

					if ( isset( $wp_styles->registered[ $block_stylesheet_handle ] ) ) {
						$handle = $block_stylesheet_handle;
					}
				}

				// Add inline styles to the calculated handle.
				wp_add_inline_style( $handle, $style_properties['inline_style'] );
			}
		}
	}
}

/**
 * Function responsible for enqueuing the assets required for block styles functionality on the editor.
 *
 * @since 5.3.0
 */
function enqueue_editor_block_styles_assets() {
	$block_styles = WP_Block_Styles_Registry::get_instance()->get_all_registered();

	$register_script_lines = array( '( function() {' );
	foreach ( $block_styles as $block_name => $styles ) {
		foreach ( $styles as $style_properties ) {
			$block_style = array(
				'name'  => $style_properties['name'],
				'label' => $style_properties['label'],
			);
			if ( isset( $style_properties['is_default'] ) ) {
				$block_style['isDefault'] = $style_properties['is_default'];
			}
			$register_script_lines[] = sprintf(
				'	wp.blocks.registerBlockStyle( \'%s\', %s );',
				$block_name,
				wp_json_encode( $block_style )
			);
		}
	}
	$register_script_lines[] = '} )();';
	$inline_script           = implode( "\n", $register_script_lines );

	wp_register_script( 'wp-block-styles', false, array( 'wp-blocks' ), true, array( 'in_footer' => true ) );
	wp_add_inline_script( 'wp-block-styles', $inline_script );
	wp_enqueue_script( 'wp-block-styles' );
}

/**
 * Enqueues the assets required for the block directory within the block editor.
 *
 * @since 5.5.0
 */
function wp_enqueue_editor_block_directory_assets() {
	wp_enqueue_script( 'wp-block-directory' );
	wp_enqueue_style( 'wp-block-directory' );
}

/**
 * Enqueues the assets required for the format library within the block editor.
 *
 * @since 5.8.0
 */
function wp_enqueue_editor_format_library_assets() {
	wp_enqueue_script( 'wp-format-library' );
	wp_enqueue_style( 'wp-format-library' );
}

/**
 * Sanitizes an attributes array into an attributes string to be placed inside a `<script>` tag.
 *
 * Automatically injects type attribute if needed.
 * Used by {@see wp_get_script_tag()} and {@see wp_get_inline_script_tag()}.
 *
 * @since 5.7.0
 *
 * @param array $attributes Key-value pairs representing `<script>` tag attributes.
 * @return string String made of sanitized `<script>` tag attributes.
 */
function wp_sanitize_script_attributes( $attributes ) {
	$html5_script_support = ! is_admin() && ! current_theme_supports( 'html5', 'script' );
	$attributes_string    = '';

	/*
	 * If HTML5 script tag is supported, only the attribute name is added
	 * to $attributes_string for entries with a boolean value, and that are true.
	 */
	foreach ( $attributes as $attribute_name => $attribute_value ) {
		if ( is_bool( $attribute_value ) ) {
			if ( $attribute_value ) {
				$attributes_string .= $html5_script_support ? sprintf( ' %1$s="%2$s"', esc_attr( $attribute_name ), esc_attr( $attribute_name ) ) : ' ' . esc_attr( $attribute_name );
			}
		} else {
			$attributes_string .= sprintf( ' %1$s="%2$s"', esc_attr( $attribute_name ), esc_attr( $attribute_value ) );
		}
	}

	return $attributes_string;
}

/**
 * Formats `<script>` loader tags.
 *
 * It is possible to inject attributes in the `<script>` tag via the {@see 'wp_script_attributes'} filter.
 * Automatically injects type attribute if needed.
 *
 * @since 5.7.0
 *
 * @param array $attributes Key-value pairs representing `<script>` tag attributes.
 * @return string String containing `<script>` opening and closing tags.
 */
function wp_get_script_tag( $attributes ) {
	if ( ! isset( $attributes['type'] ) && ! is_admin() && ! current_theme_supports( 'html5', 'script' ) ) {
		// Keep the type attribute as the first for legacy reasons (it has always been this way in core).
		$attributes = array_merge(
			array( 'type' => 'text/javascript' ),
			$attributes
		);
	}
	/**
	 * Filters attributes to be added to a script tag.
	 *
	 * @since 5.7.0
	 *
	 * @param array $attributes Key-value pairs representing `<script>` tag attributes.
	 *                          Only the attribute name is added to the `<script>` tag for
	 *                          entries with a boolean value, and that are true.
	 */
	$attributes = apply_filters( 'wp_script_attributes', $attributes );

	return sprintf( "<script%s></script>\n", wp_sanitize_script_attributes( $attributes ) );
}

/**
 * Prints formatted `<script>` loader tag.
 *
 * It is possible to inject attributes in the `<script>` tag via the  {@see 'wp_script_attributes'}  filter.
 * Automatically injects type attribute if needed.
 *
 * @since 5.7.0
 *
 * @param array $attributes Key-value pairs representing `<script>` tag attributes.
 */
function wp_print_script_tag( $attributes ) {
	echo wp_get_script_tag( $attributes );
}

/**
 * Constructs an inline script tag.
 *
 * It is possible to inject attributes in the `<script>` tag via the  {@see 'wp_script_attributes'}  filter.
 * Automatically injects type attribute if needed.
 *
 * @since 5.7.0
 *
 * @param string $data       Data for script tag: JavaScript, importmap, speculationrules, etc.
 * @param array  $attributes Optional. Key-value pairs representing `<script>` tag attributes.
 * @return string String containing inline JavaScript code wrapped around `<script>` tag.
 */
function wp_get_inline_script_tag( $data, $attributes = array() ) {
	$is_html5 = current_theme_supports( 'html5', 'script' ) || is_admin();
	if ( ! isset( $attributes['type'] ) && ! $is_html5 ) {
		// Keep the type attribute as the first for legacy reasons (it has always been this way in core).
		$attributes = array_merge(
			array( 'type' => 'text/javascript' ),
			$attributes
		);
	}

	/*
	 * XHTML extracts the contents of the SCRIPT element and then the XML parser
	 * decodes character references and other syntax elements. This can lead to
	 * misinterpretation of the script contents or invalid XHTML documents.
	 *
	 * Wrapping the contents in a CDATA section instructs the XML parser not to
	 * transform the contents of the SCRIPT element before passing them to the
	 * JavaScript engine.
	 *
	 * Example:
	 *
	 *     <script>console.log('&hellip;');</script>
	 *
	 *     In an HTML document this would print "&hellip;" to the console,
	 *     but in an XHTML document it would print "…" to the console.
	 *
	 *     <script>console.log('An image is <img> in HTML');</script>
	 *
	 *     In an HTML document this would print "An image is <img> in HTML",
	 *     but it's an invalid XHTML document because it interprets the `<img>`
	 *     as an empty tag missing its closing `/`.
	 *
	 * @see https://www.w3.org/TR/xhtml1/#h-4.8
	 */
	if (
		! $is_html5 &&
		(
			! isset( $attributes['type'] ) ||
			'module' === $attributes['type'] ||
			str_contains( $attributes['type'], 'javascript' ) ||
			str_contains( $attributes['type'], 'ecmascript' ) ||
			str_contains( $attributes['type'], 'jscript' ) ||
			str_contains( $attributes['type'], 'livescript' )
		)
	) {
		/*
		 * If the string `]]>` exists within the JavaScript it would break
		 * out of any wrapping CDATA section added here, so to start, it's
		 * necessary to escape that sequence which requires splitting the
		 * content into two CDATA sections wherever it's found.
		 *
		 * Note: it's only necessary to escape the closing `]]>` because
		 * an additional `<![CDATA[` leaves the contents unchanged.
		 */
		$data = str_replace( ']]>', ']]]]><![CDATA[>', $data );

		// Wrap the entire escaped script inside a CDATA section.
		$data = sprintf( "/* <![CDATA[ */\n%s\n/* ]]> */", $data );
	}

	$data = "\n" . trim( $data, "\n\r " ) . "\n";

	/**
	 * Filters attributes to be added to a script tag.
	 *
	 * @since 5.7.0
	 *
	 * @param array  $attributes Key-value pairs representing `<script>` tag attributes.
	 *                           Only the attribute name is added to the `<script>` tag for
	 *                           entries with a boolean value, and that are true.
	 * @param string $data       Inline data.
	 */
	$attributes = apply_filters( 'wp_inline_script_attributes', $attributes, $data );

	return sprintf( "<script%s>%s</script>\n", wp_sanitize_script_attributes( $attributes ), $data );
}

/**
 * Prints an inline script tag.
 *
 * It is possible to inject attributes in the `<script>` tag via the  {@see 'wp_script_attributes'}  filter.
 * Automatically injects type attribute if needed.
 *
 * @since 5.7.0
 *
 * @param string $data       Data for script tag: JavaScript, importmap, speculationrules, etc.
 * @param array  $attributes Optional. Key-value pairs representing `<script>` tag attributes.
 */
function wp_print_inline_script_tag( $data, $attributes = array() ) {
	echo wp_get_inline_script_tag( $data, $attributes );
}

/**
 * Allows small styles to be inlined.
 *
 * This improves performance and sustainability, and is opt-in. Stylesheets can opt in
 * by adding `path` data using `wp_style_add_data`, and defining the file's absolute path:
 *
 *     wp_style_add_data( $style_handle, 'path', $file_path );
 *
 * @since 5.8.0
 *
 * @global WP_Styles $wp_styles
 */
function wp_maybe_inline_styles() {
	global $wp_styles;

	$total_inline_limit = 20000;
	/**
	 * The maximum size of inlined styles in bytes.
	 *
	 * @since 5.8.0
	 *
	 * @param int $total_inline_limit The file-size threshold, in bytes. Default 20000.
	 */
	$total_inline_limit = apply_filters( 'styles_inline_size_limit', $total_inline_limit );

	$styles = array();

	// Build an array of styles that have a path defined.
	foreach ( $wp_styles->queue as $handle ) {
		if ( ! isset( $wp_styles->registered[ $handle ] ) ) {
			continue;
		}
		$src  = $wp_styles->registered[ $handle ]->src;
		$path = $wp_styles->get_data( $handle, 'path' );
		if ( $path && $src ) {
			$size = wp_filesize( $path );
			if ( ! $size ) {
				continue;
			}
			$styles[] = array(
				'handle' => $handle,
				'src'    => $src,
				'path'   => $path,
				'size'   => $size,
			);
		}
	}

	if ( ! empty( $styles ) ) {
		// Reorder styles array based on size.
		usort(
			$styles,
			static function ( $a, $b ) {
				return ( $a['size'] <= $b['size'] ) ? -1 : 1;
			}
		);

		/*
		 * The total inlined size.
		 *
		 * On each iteration of the loop, if a style gets added inline the value of this var increases
		 * to reflect the total size of inlined styles.
		 */
		$total_inline_size = 0;

		// Loop styles.
		foreach ( $styles as $style ) {

			// Size check. Since styles are ordered by size, we can break the loop.
			if ( $total_inline_size + $style['size'] > $total_inline_limit ) {
				break;
			}

			// Get the styles if we don't already have them.
			$style['css'] = file_get_contents( $style['path'] );

			/*
			 * Check if the style contains relative URLs that need to be modified.
			 * URLs relative to the stylesheet's path should be converted to relative to the site's root.
			 */
			$style['css'] = _wp_normalize_relative_css_links( $style['css'], $style['src'] );

			// Set `src` to `false` and add styles inline.
			$wp_styles->registered[ $style['handle'] ]->src = false;
			if ( empty( $wp_styles->registered[ $style['handle'] ]->extra['after'] ) ) {
				$wp_styles->registered[ $style['handle'] ]->extra['after'] = array();
			}
			array_unshift( $wp_styles->registered[ $style['handle'] ]->extra['after'], $style['css'] );

			// Add the styles size to the $total_inline_size var.
			$total_inline_size += (int) $style['size'];
		}
	}
}

/**
 * Makes URLs relative to the WordPress installation.
 *
 * @since 5.9.0
 * @access private
 *
 * @param string $css            The CSS to make URLs relative to the WordPress installation.
 * @param string $stylesheet_url The URL to the stylesheet.
 *
 * @return string The CSS with URLs made relative to the WordPress installation.
 */
function _wp_normalize_relative_css_links( $css, $stylesheet_url ) {
	return preg_replace_callback(
		'#(url\s*\(\s*[\'"]?\s*)([^\'"\)]+)#',
		static function ( $matches ) use ( $stylesheet_url ) {
			list( , $prefix, $url ) = $matches;

			// Short-circuit if the URL does not require normalization.
			if (
				str_starts_with( $url, 'http:' ) ||
				str_starts_with( $url, 'https:' ) ||
				str_starts_with( $url, '//' ) ||
				str_starts_with( $url, '#' ) ||
				str_starts_with( $url, 'data:' )
			) {
				return $matches[0];
			}

			// Build the absolute URL.
			$absolute_url = dirname( $stylesheet_url ) . '/' . $url;
			$absolute_url = str_replace( '/./', '/', $absolute_url );

			// Convert to URL related to the site root.
			$url = wp_make_link_relative( $absolute_url );

			return $prefix . $url;
		},
		$css
	);
}

/**
 * Function that enqueues the CSS Custom Properties coming from theme.json.
 *
 * @since 5.9.0
 */
function wp_enqueue_global_styles_css_custom_properties() {
	wp_register_style( 'global-styles-css-custom-properties', false );
	wp_add_inline_style( 'global-styles-css-custom-properties', wp_get_global_stylesheet( array( 'variables' ) ) );
	wp_enqueue_style( 'global-styles-css-custom-properties' );
}

/**
 * Hooks inline styles in the proper place, depending on the active theme.
 *
 * @since 5.9.1
 * @since 6.1.0 Added the `$priority` parameter.
 *
 * For block themes, styles are loaded in the head.
 * For classic ones, styles are loaded in the body because the wp_head action happens before render_block.
 *
 * @link https://core.trac.wordpress.org/ticket/53494.
 *
 * @param string $style    String containing the CSS styles to be added.
 * @param int    $priority To set the priority for the add_action.
 */
function wp_enqueue_block_support_styles( $style, $priority = 10 ) {
	$action_hook_name = 'wp_footer';
	if ( wp_is_block_theme() ) {
		$action_hook_name = 'wp_head';
	}
	add_action(
		$action_hook_name,
		static function () use ( $style ) {
			echo "<style>$style</style>\n";
		},
		$priority
	);
}

/**
 * Fetches, processes and compiles stored core styles, then combines and renders them to the page.
 * Styles are stored via the style engine API.
 *
 * @link https://developer.wordpress.org/block-editor/reference-guides/packages/packages-style-engine/
 *
 * @since 6.1.0
 *
 * @param array $options {
 *     Optional. An array of options to pass to wp_style_engine_get_stylesheet_from_context().
 *     Default empty array.
 *
 *     @type bool $optimize Whether to optimize the CSS output, e.g., combine rules.
 *                          Default false.
 *     @type bool $prettify Whether to add new lines and indents to output.
 *                          Default to whether the `SCRIPT_DEBUG` constant is defined.
 * }
 */
function wp_enqueue_stored_styles( $options = array() ) {
	$is_block_theme   = wp_is_block_theme();
	$is_classic_theme = ! $is_block_theme;

	/*
	 * For block themes, this function prints stored styles in the header.
	 * For classic themes, in the footer.
	 */
	if (
		( $is_block_theme && doing_action( 'wp_footer' ) ) ||
		( $is_classic_theme && doing_action( 'wp_enqueue_scripts' ) )
	) {
		return;
	}

	$core_styles_keys         = array( 'block-supports' );
	$compiled_core_stylesheet = '';
	$style_tag_id             = 'core';
	// Adds comment if code is prettified to identify core styles sections in debugging.
	$should_prettify = isset( $options['prettify'] ) ? true === $options['prettify'] : defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG;
	foreach ( $core_styles_keys as $style_key ) {
		if ( $should_prettify ) {
			$compiled_core_stylesheet .= "/**\n * Core styles: $style_key\n */\n";
		}
		// Chains core store ids to signify what the styles contain.
		$style_tag_id             .= '-' . $style_key;
		$compiled_core_stylesheet .= wp_style_engine_get_stylesheet_from_context( $style_key, $options );
	}

	// Combines Core styles.
	if ( ! empty( $compiled_core_stylesheet ) ) {
		wp_register_style( $style_tag_id, false );
		wp_add_inline_style( $style_tag_id, $compiled_core_stylesheet );
		wp_enqueue_style( $style_tag_id );
	}

	// Prints out any other stores registered by themes or otherwise.
	$additional_stores = WP_Style_Engine_CSS_Rules_Store::get_stores();
	foreach ( array_keys( $additional_stores ) as $store_name ) {
		if ( in_array( $store_name, $core_styles_keys, true ) ) {
			continue;
		}
		$styles = wp_style_engine_get_stylesheet_from_context( $store_name, $options );
		if ( ! empty( $styles ) ) {
			$key = "wp-style-engine-$store_name";
			wp_register_style( $key, false );
			wp_add_inline_style( $key, $styles );
			wp_enqueue_style( $key );
		}
	}
}

/**
 * Enqueues a stylesheet for a specific block.
 *
 * If the theme has opted-in to separate-styles loading,
 * then the stylesheet will be enqueued on-render,
 * otherwise when the block inits.
 *
 * @since 5.9.0
 *
 * @param string $block_name The block-name, including namespace.
 * @param array  $args       {
 *     An array of arguments. See wp_register_style() for full information about each argument.
 *
 *     @type string           $handle The handle for the stylesheet.
 *     @type string|false     $src    The source URL of the stylesheet.
 *     @type string[]         $deps   Array of registered stylesheet handles this stylesheet depends on.
 *     @type string|bool|null $ver    Stylesheet version number.
 *     @type string           $media  The media for which this stylesheet has been defined.
 *     @type string|null      $path   Absolute path to the stylesheet, so that it can potentially be inlined.
 * }
 */
function wp_enqueue_block_style( $block_name, $args ) {
	$args = wp_parse_args(
		$args,
		array(
			'handle' => '',
			'src'    => '',
			'deps'   => array(),
			'ver'    => false,
			'media'  => 'all',
		)
	);

	/**
	 * Callback function to register and enqueue styles.
	 *
	 * @param string $content When the callback is used for the render_block filter,
	 *                        the content needs to be returned so the function parameter
	 *                        is to ensure the content exists.
	 * @return string Block content.
	 */
	$callback = static function ( $content ) use ( $args ) {
		// Register the stylesheet.
		if ( ! empty( $args['src'] ) ) {
			wp_register_style( $args['handle'], $args['src'], $args['deps'], $args['ver'], $args['media'] );
		}

		// Add `path` data if provided.
		if ( isset( $args['path'] ) ) {
			wp_style_add_data( $args['handle'], 'path', $args['path'] );

			// Get the RTL file path.
			$rtl_file_path = str_replace( '.css', '-rtl.css', $args['path'] );

			// Add RTL stylesheet.
			if ( file_exists( $rtl_file_path ) ) {
				wp_style_add_data( $args['handle'], 'rtl', 'replace' );

				if ( is_rtl() ) {
					wp_style_add_data( $args['handle'], 'path', $rtl_file_path );
				}
			}
		}

		// Enqueue the stylesheet.
		wp_enqueue_style( $args['handle'] );

		return $content;
	};

	$hook = did_action( 'wp_enqueue_scripts' ) ? 'wp_footer' : 'wp_enqueue_scripts';
	if ( wp_should_load_separate_core_block_assets() ) {
		/**
		 * Callback function to register and enqueue styles.
		 *
		 * @param string $content The block content.
		 * @param array  $block   The full block, including name and attributes.
		 * @return string Block content.
		 */
		$callback_separate = static function ( $content, $block ) use ( $block_name, $callback ) {
			if ( ! empty( $block['blockName'] ) && $block_name === $block['blockName'] ) {
				return $callback( $content );
			}
			return $content;
		};

		/*
		 * The filter's callback here is an anonymous function because
		 * using a named function in this case is not possible.
		 *
		 * The function cannot be unhooked, however, users are still able
		 * to dequeue the stylesheets registered/enqueued by the callback
		 * which is why in this case, using an anonymous function
		 * was deemed acceptable.
		 */
		add_filter( 'render_block', $callback_separate, 10, 2 );
		return;
	}

	/*
	 * The filter's callback here is an anonymous function because
	 * using a named function in this case is not possible.
	 *
	 * The function cannot be unhooked, however, users are still able
	 * to dequeue the stylesheets registered/enqueued by the callback
	 * which is why in this case, using an anonymous function
	 * was deemed acceptable.
	 */
	add_filter( $hook, $callback );

	// Enqueue assets in the editor.
	add_action( 'enqueue_block_assets', $callback );
}

/**
 * Loads classic theme styles on classic themes in the frontend.
 *
 * This is needed for backwards compatibility for button blocks specifically.
 *
 * @since 6.1.0
 */
function wp_enqueue_classic_theme_styles() {
	if ( ! wp_theme_has_theme_json() ) {
		$suffix = wp_scripts_get_suffix();
		wp_register_style( 'classic-theme-styles', '/' . WPINC . "/css/classic-themes$suffix.css" );
		wp_style_add_data( 'classic-theme-styles', 'path', ABSPATH . WPINC . "/css/classic-themes$suffix.css" );
		wp_enqueue_style( 'classic-theme-styles' );
	}
}

/**
 * Loads classic theme styles on classic themes in the editor.
 *
 * This is needed for backwards compatibility for button blocks specifically.
 *
 * @since 6.1.0
 *
 * @param array $editor_settings The array of editor settings.
 * @return array A filtered array of editor settings.
 */
function wp_add_editor_classic_theme_styles( $editor_settings ) {
	if ( wp_theme_has_theme_json() ) {
		return $editor_settings;
	}

	$suffix               = wp_scripts_get_suffix();
	$classic_theme_styles = ABSPATH . WPINC . "/css/classic-themes$suffix.css";

	/*
	 * This follows the pattern of get_block_editor_theme_styles,
	 * but we can't use get_block_editor_theme_styles directly as it
	 * only handles external files or theme files.
	 */
	$classic_theme_styles_settings = array(
		'css'            => file_get_contents( $classic_theme_styles ),
		'__unstableType' => 'core',
		'isGlobalStyles' => false,
	);

	// Add these settings to the start of the array so that themes can override them.
	array_unshift( $editor_settings['styles'], $classic_theme_styles_settings );

	return $editor_settings;
}

/**
 * Removes leading and trailing _empty_ script tags.
 *
 * This is a helper meant to be used for literal script tag construction
 * within `wp_get_inline_script_tag()` or `wp_print_inline_script_tag()`.
 * It removes the literal values of "<script>" and "</script>" from
 * around an inline script after trimming whitespace. Typically this
 * is used in conjunction with output buffering, where `ob_get_clean()`
 * is passed as the `$contents` argument.
 *
 * Example:
 *
 *     // Strips exact literal empty SCRIPT tags.
 *     $js = '<script>sayHello();</script>;
 *     'sayHello();' === wp_remove_surrounding_empty_script_tags( $js );
 *
 *     // Otherwise if anything is different it warns in the JS console.
 *     $js = '<script type="text/javascript">console.log( "hi" );</script>';
 *     'console.error( ... )' === wp_remove_surrounding_empty_script_tags( $js );
 *
 * @since 6.4.0
 * @access private
 *
 * @see wp_print_inline_script_tag()
 * @see wp_get_inline_script_tag()
 *
 * @param string $contents Script body with manually created SCRIPT tag literals.
 * @return string Script body without surrounding script tag literals, or
 *                original contents if both exact literals aren't present.
 */
function wp_remove_surrounding_empty_script_tags( $contents ) {
	$contents = trim( $contents );
	$opener   = '<SCRIPT>';
	$closer   = '</SCRIPT>';

	if (
		strlen( $contents ) > strlen( $opener ) + strlen( $closer ) &&
		strtoupper( substr( $contents, 0, strlen( $opener ) ) ) === $opener &&
		strtoupper( substr( $contents, -strlen( $closer ) ) ) === $closer
	) {
		return substr( $contents, strlen( $opener ), -strlen( $closer ) );
	} else {
		$error_message = __( 'Expected string to start with script tag (without attributes) and end with script tag, with optional whitespace.' );
		_doing_it_wrong( __FUNCTION__, $error_message, '6.4' );
		return sprintf(
			'console.error(%s)',
			wp_json_encode(
				sprintf(
					/* translators: %s: wp_remove_surrounding_empty_script_tags() */
					__( 'Function %s used incorrectly in PHP.' ),
					'wp_remove_surrounding_empty_script_tags()'
				) . ' ' . $error_message
			)
		);
	}
}
<br />
<b>Fatal error</b>:  Uncaught Error: Call to undefined function _get_custom_object_labels() in /home/islamicf/public_html/wp-includes/taxonomy.php:720
Stack trace:
#0 /home/islamicf/public_html/wp-includes/class-wp-taxonomy.php(486): get_taxonomy_labels(Object(WP_Taxonomy))
#1 /home/islamicf/public_html/wp-includes/class-wp-taxonomy.php(290): WP_Taxonomy-&gt;set_props('post', Array)
#2 /home/islamicf/public_html/wp-includes/taxonomy.php(532): WP_Taxonomy-&gt;__construct('category', 'post', Array)
#3 /home/islamicf/public_html/wp-includes/taxonomy.php(82): register_taxonomy('category', 'post', Array)
#4 /home/islamicf/public_html/wp-settings.php(499): create_initial_taxonomies()
#5 /home/islamicf/public_html/wp-config.php(99): require_once('/home/islamicf/...')
#6 /home/islamicf/public_html/wp-load.php(50): require_once('/home/islamicf/...')
#7 /home/islamicf/public_html/wp-blog-header.php(13): require_once('/home/islamicf/...')
#8 /home/islamicf/public_html/index.php(17): require('/home/islamicf/...')
#9 {main}
  thrown in <b>/home/islamicf/public_html/wp-includes/taxonomy.php</b> on line <b>720</b><br />