FM / wp-includes

/home/altere25/berryglowbeauty.com/wp-includes/

/home/altere25/berryglowbeauty.com/wp-includes

Name	Size	Mode	Actions
blocks/	-	0755	rm
certificates/	-	0755	rm
css/	-	0755	rm
customize/	-	0755	rm
fonts/	-	0755	rm
ID3/	-	0755	rm
images/	-	0755	rm
IXR/	-	0755	rm
js/	-	0755	rm
pomo/	-	0755	rm
random_compat/	-	0755	rm
Requests/	-	0755	rm
rest-api/	-	0755	rm
SimplePie/	-	0755	rm
sodium_compat/	-	0755	rm
Text/	-	0755	rm
theme-compat/	-	0755	rm
widgets/	-	0755	rm
.htaccess	178	0644	edit dl rm
admin-bar.php	30952	0644	edit dl rm
atomlib.php	11840	0644	edit dl rm
author-template.php	16995	0644	edit dl rm
blocks.php	19242	0644	edit dl rm
bookmark-template.php	12497	0644	edit dl rm
bookmark.php	15014	0644	edit dl rm
cache.php	21874	0644	edit dl rm
canonical.php	29474	0644	edit dl rm
capabilities.php	34089	0644	edit dl rm
category-template.php	52638	0644	edit dl rm
category.php	12378	0644	edit dl rm
class-feed.php	544	0644	edit dl rm
class-http.php	38763	0644	edit dl rm
class-IXR.php	2573	0644	edit dl rm
class-json.php	43390	0644	edit dl rm
class-oembed.php	410	0644	edit dl rm
class-phpass.php	7317	0644	edit dl rm
class-phpmailer.php	148592	0644	edit dl rm
class-pop3.php	20919	0644	edit dl rm
class-requests.php	29798	0644	edit dl rm
class-simplepie.php	89264	0644	edit dl rm
class-smtp.php	40919	0644	edit dl rm
class-snoopy.php	37785	0644	edit dl rm
class-walker-category-dropdown.php	2127	0644	edit dl rm
class-walker-category.php	7874	0644	edit dl rm
class-walker-comment.php	13685	0644	edit dl rm
class-walker-nav-menu.php	8669	0644	edit dl rm
class-walker-page-dropdown.php	2299	0644	edit dl rm
class-walker-page.php	7033	0644	edit dl rm
class-wp-admin-bar.php	16951	0644	edit dl rm
class-wp-ajax-response.php	5235	0644	edit dl rm
class-wp-block-parser.php	15215	0644	edit dl rm
class-wp-block-styles-registry.php	4663	0644	edit dl rm
class-wp-block-type-registry.php	5091	0644	edit dl rm
class-wp-block-type.php	4815	0644	edit dl rm
class-wp-comment-query.php	44514	0644	edit dl rm
class-wp-comment.php	8961	0644	edit dl rm
class-wp-customize-control.php	25054	0644	edit dl rm
class-wp-customize-manager.php	203252	0644	edit dl rm
class-wp-customize-nav-menus.php	54963	0644	edit dl rm
class-wp-customize-panel.php	9596	0644	edit dl rm
class-wp-customize-section.php	10168	0644	edit dl rm
class-wp-customize-setting.php	28191	0644	edit dl rm
class-wp-customize-widgets.php	66978	0644	edit dl rm
class-wp-date-query.php	35276	0644	edit dl rm
class-wp-dependency.php	2501	0644	edit dl rm
class-wp-editor.php	68219	0644	edit dl rm
class-wp-embed.php	14746	0644	edit dl rm
class-wp-error.php	4923	0644	edit dl rm
class-wp-fatal-error-handler.php	7429	0644	edit dl rm
class-wp-feed-cache-transient.php	2560	0644	edit dl rm
class-wp-feed-cache.php	749	0644	edit dl rm
class-wp-hook.php	14294	0644	edit dl rm
class-wp-http-cookie.php	7146	0644	edit dl rm
class-wp-http-curl.php	12327	0644	edit dl rm
class-wp-http-encoding.php	6542	0644	edit dl rm
class-wp-http-ixr-client.php	3331	0644	edit dl rm
class-wp-http-proxy.php	6077	0644	edit dl rm
class-wp-http-requests-hooks.php	1949	0644	edit dl rm
class-wp-http-requests-response.php	4343	0644	edit dl rm
class-wp-http-response.php	2951	0644	edit dl rm
class-wp-http-streams.php	16070	0644	edit dl rm
class-wp-image-editor-gd.php	13886	0644	edit dl rm
class-wp-image-editor-imagick.php	28828	0644	edit dl rm
class-wp-image-editor.php	13911	0644	edit dl rm
class-wp-list-util.php	6407	0644	edit dl rm
class-wp-locale-switcher.php	5022	0644	edit dl rm
class-wp-locale.php	13893	0644	edit dl rm
class-wp-matchesmapregex.php	1804	0644	edit dl rm
class-wp-meta-query.php	27847	0644	edit dl rm
class-wp-metadata-lazyloader.php	5384	0644	edit dl rm
class-wp-network-query.php	18368	0644	edit dl rm
class-wp-network.php	12284	0644	edit dl rm
class-wp-oembed-controller.php	6027	0644	edit dl rm
class-wp-oembed.php	30174	0644	edit dl rm
class-wp-paused-extensions-storage.php	4933	0644	edit dl rm
class-wp-post-type.php	19527	0644	edit dl rm
class-wp-post.php	6441	0644	edit dl rm
class-wp-query.php	131083	0644	edit dl rm
class-wp-recovery-mode-cookie-service.php	6459	0644	edit dl rm
class-wp-recovery-mode-email-service.php	10122	0644	edit dl rm
class-wp-recovery-mode-key-service.php	4284	0644	edit dl rm
class-wp-recovery-mode-link-service.php	3370	0644	edit dl rm
class-wp-recovery-mode.php	11358	0644	edit dl rm
class-wp-rewrite.php	59893	0644	edit dl rm
class-wp-role.php	2661	0644	edit dl rm
class-wp-roles.php	8300	0644	edit dl rm
class-wp-session-tokens.php	7430	0644	edit dl rm
class-wp-simplepie-file.php	2326	0644	edit dl rm
class-wp-simplepie-sanitize-kses.php	1775	0644	edit dl rm
class-wp-site-query.php	28531	0644	edit dl rm
class-wp-site.php	7367	0644	edit dl rm
class-wp-tax-query.php	19440	0644	edit dl rm
class-wp-taxonomy.php	10688	0644	edit dl rm
class-wp-term-query.php	35423	0644	edit dl rm
class-wp-term.php	5265	0644	edit dl rm
class-wp-text-diff-renderer-inline.php	716	0644	edit dl rm
class-wp-text-diff-renderer-table.php	16796	0644	edit dl rm
class-wp-theme.php	50973	0644	edit dl rm
class-wp-user-meta-session-tokens.php	2990	0644	edit dl rm
class-wp-user-query.php	31298	0644	edit dl rm
class-wp-user-request.php	1996	0644	edit dl rm
class-wp-user.php	21766	0644	edit dl rm
class-wp-walker.php	12718	0644	edit dl rm
class-wp-widget-factory.php	2853	0644	edit dl rm
class-wp-widget.php	17842	0644	edit dl rm
class-wp-xmlrpc-server.php	210072	0644	edit dl rm
class-wp.php	24551	0644	edit dl rm
class.wp-dependencies.php	11524	0644	edit dl rm
class.wp-scripts.php	17756	0644	edit dl rm
class.wp-styles.php	10532	0644	edit dl rm
comment-template.php	91640	0644	edit dl rm
comment.php	117233	0644	edit dl rm
compat.php	12982	0644	edit dl rm
cron.php	32451	0644	edit dl rm
date.php	409	0644	edit dl rm
default-constants.php	10122	0644	edit dl rm
default-filters.php	25894	0644	edit dl rm
default-widgets.php	2180	0644	edit dl rm
deprecated.php	114644	0644	edit dl rm
embed-template.php	344	0644	edit dl rm
embed.php	47367	0644	edit dl rm
error-protection.php	3387	0644	edit dl rm
error_log	1764	0644	edit dl rm
feed-atom-comments.php	5405	0644	edit dl rm
feed-atom.php	3081	0644	edit dl rm
feed-rdf.php	2660	0644	edit dl rm
feed-rss.php	1190	0644	edit dl rm
feed-rss2-comments.php	4150	0644	edit dl rm
feed-rss2.php	3782	0644	edit dl rm
feed.php	22022	0644	edit dl rm
formatting.php	298428	0644	edit dl rm
functions.php	228155	0644	edit dl rm
functions.wp-scripts.php	12824	0644	edit dl rm
functions.wp-styles.php	8219	0644	edit dl rm
general-template.php	152465	0644	edit dl rm
http.php	24324	0644	edit dl rm
kses.php	58723	0644	edit dl rm
l10n.php	53102	0644	edit dl rm
link-template.php	143524	0644	edit dl rm
load.php	43291	0644	edit dl rm
locale.php	162	0644	edit dl rm
media-template.php	57710	0644	edit dl rm
media.php	149717	0644	edit dl rm
meta.php	47749	0644	edit dl rm
ms-blogs.php	24413	0644	edit dl rm
ms-default-constants.php	4785	0644	edit dl rm
ms-default-filters.php	6414	0644	edit dl rm
ms-deprecated.php	21344	0644	edit dl rm
ms-files.php	2649	0644	edit dl rm
ms-functions.php	87638	0644	edit dl rm
ms-load.php	19624	0644	edit dl rm
ms-network.php	3658	0644	edit dl rm
ms-settings.php	4134	0644	edit dl rm
ms-site.php	43073	0644	edit dl rm
nav-menu-template.php	22053	0644	edit dl rm
nav-menu.php	41317	0644	edit dl rm
option.php	70145	0644	edit dl rm
pluggable-deprecated.php	6262	0644	edit dl rm
pluggable.php	99833	0644	edit dl rm
plugin.php	32317	0644	edit dl rm
post-formats.php	7053	0644	edit dl rm
post-template.php	62915	0644	edit dl rm
post-thumbnail-template.php	8988	0644	edit dl rm
post.php	244611	0644	edit dl rm
query.php	32929	0644	edit dl rm
registration-functions.php	202	0644	edit dl rm
registration.php	202	0644	edit dl rm
rest-api.php	46630	0644	edit dl rm
revision.php	21686	0644	edit dl rm
rewrite.php	18030	0644	edit dl rm
rss-functions.php	214	0644	edit dl rm
rss.php	23208	0644	edit dl rm
script-loader.php	113551	0644	edit dl rm
session.php	264	0644	edit dl rm
shortcodes.php	21704	0644	edit dl rm
spl-autoload-compat.php	443	0644	edit dl rm
taxonomy.php	157961	0644	edit dl rm
template-loader.php	3190	0644	edit dl rm
template.php	21046	0644	edit dl rm
theme.php	104876	0644	edit dl rm
update.php	25573	0644	edit dl rm
user.php	124532	0644	edit dl rm
vars.php	5815	0644	edit dl rm
version.php	762	0644	edit dl rm
widgets.php	58750	0644	edit dl rm
wlwmanifest.xml	1045	0644	edit dl rm
wp-db.php	103829	0644	edit dl rm
wp-diff.php	662	0644	edit dl rm

Edit: /home/altere25/berryglowbeauty.com/wp-includes/meta.php (47749B)

<?php
/**
 * Core Metadata API
 *
 * Functions for retrieving and manipulating metadata of various WordPress object types. Metadata
 * for an object is a represented by a simple key-value pair. Objects may contain multiple
 * metadata entries that share the same key and differ only in their value.
 *
 * @package WordPress
 * @subpackage Meta
 */

/**
 * Add metadata for the specified object.
 *
 * @since 2.9.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param string $meta_type  Type of object metadata is for (e.g., comment, post, term, or user).
 * @param int    $object_id  ID of the object metadata is for
 * @param string $meta_key   Metadata key
 * @param mixed  $meta_value Metadata value. Must be serializable if non-scalar.
 * @param bool   $unique     Optional, default is false.
 *                           Whether the specified metadata key should be unique for the object.
 *                           If true, and the object already has a value for the specified metadata key,
 *                           no change will be made.
 * @return int|false The meta ID on success, false on failure.
 */
function add_metadata( $meta_type, $object_id, $meta_key, $meta_value, $unique = false ) {
	global $wpdb;

if ( ! $meta_type || ! $meta_key || ! is_numeric( $object_id ) ) {
		return false;
	}

$object_id = absint( $object_id );
	if ( ! $object_id ) {
		return false;
	}

$table = _get_meta_table( $meta_type );
	if ( ! $table ) {
		return false;
	}

$meta_subtype = get_object_subtype( $meta_type, $object_id );

$column = sanitize_key( $meta_type . '_id' );

// expected_slashed ($meta_key)
	$meta_key   = wp_unslash( $meta_key );
	$meta_value = wp_unslash( $meta_value );
	$meta_value = sanitize_meta( $meta_key, $meta_value, $meta_type, $meta_subtype );

/**
	 * Filters whether to add metadata of a specific type.
	 *
	 * The dynamic portion of the hook, `$meta_type`, refers to the meta
	 * object type (comment, post, term, or user). Returning a non-null value
	 * will effectively short-circuit the function.
	 *
	 * @since 3.1.0
	 *
	 * @param null|bool $check      Whether to allow adding metadata for the given type.
	 * @param int       $object_id  Object ID.
	 * @param string    $meta_key   Meta key.
	 * @param mixed     $meta_value Meta value. Must be serializable if non-scalar.
	 * @param bool      $unique     Whether the specified meta key should be unique
	 *                              for the object. Optional. Default false.
	 */
	$check = apply_filters( "add_{$meta_type}_metadata", null, $object_id, $meta_key, $meta_value, $unique );
	if ( null !== $check ) {
		return $check;
	}

if ( $unique && $wpdb->get_var(
		$wpdb->prepare(
			"SELECT COUNT(*) FROM $table WHERE meta_key = %s AND $column = %d",
			$meta_key,
			$object_id
		)
	) ) {
		return false;
	}

$_meta_value = $meta_value;
	$meta_value  = maybe_serialize( $meta_value );

/**
	 * Fires immediately before meta of a specific type is added.
	 *
	 * The dynamic portion of the hook, `$meta_type`, refers to the meta
	 * object type (comment, post, term, or user).
	 *
	 * @since 3.1.0
	 *
	 * @param int    $object_id   Object ID.
	 * @param string $meta_key    Meta key.
	 * @param mixed  $_meta_value Meta value.
	 */
	do_action( "add_{$meta_type}_meta", $object_id, $meta_key, $_meta_value );

$result = $wpdb->insert(
		$table,
		array(
			$column      => $object_id,
			'meta_key'   => $meta_key,
			'meta_value' => $meta_value,
		)
	);

if ( ! $result ) {
		return false;
	}

$mid = (int) $wpdb->insert_id;

wp_cache_delete( $object_id, $meta_type . '_meta' );

/**
	 * Fires immediately after meta of a specific type is added.
	 *
	 * The dynamic portion of the hook, `$meta_type`, refers to the meta
	 * object type (comment, post, term, or user).
	 *
	 * @since 2.9.0
	 *
	 * @param int    $mid         The meta ID after successful update.
	 * @param int    $object_id   Object ID.
	 * @param string $meta_key    Meta key.
	 * @param mixed  $_meta_value Meta value.
	 */
	do_action( "added_{$meta_type}_meta", $mid, $object_id, $meta_key, $_meta_value );

return $mid;
}

/**
 * Update metadata for the specified object. If no value already exists for the specified object
 * ID and metadata key, the metadata will be added.
 *
 * @since 2.9.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param string $meta_type  Type of object metadata is for (e.g., comment, post, term, or user).
 * @param int    $object_id  ID of the object metadata is for
 * @param string $meta_key   Metadata key
 * @param mixed  $meta_value Metadata value. Must be serializable if non-scalar.
 * @param mixed  $prev_value Optional. If specified, only update existing metadata entries with
 *                           the specified value. Otherwise, update all entries.
 * @return int|bool The new meta field ID if a field with the given key didn't exist and was
 *                  therefore added, true on successful update, false on failure.
 */
function update_metadata( $meta_type, $object_id, $meta_key, $meta_value, $prev_value = '' ) {
	global $wpdb;

if ( ! $meta_type || ! $meta_key || ! is_numeric( $object_id ) ) {
		return false;
	}

$object_id = absint( $object_id );
	if ( ! $object_id ) {
		return false;
	}

$table = _get_meta_table( $meta_type );
	if ( ! $table ) {
		return false;
	}

$meta_subtype = get_object_subtype( $meta_type, $object_id );

$column    = sanitize_key( $meta_type . '_id' );
	$id_column = 'user' == $meta_type ? 'umeta_id' : 'meta_id';

// expected_slashed ($meta_key)
	$raw_meta_key = $meta_key;
	$meta_key     = wp_unslash( $meta_key );
	$passed_value = $meta_value;
	$meta_value   = wp_unslash( $meta_value );
	$meta_value   = sanitize_meta( $meta_key, $meta_value, $meta_type, $meta_subtype );

/**
	 * Filters whether to update metadata of a specific type.
	 *
	 * The dynamic portion of the hook, `$meta_type`, refers to the meta
	 * object type (comment, post, term, or user). Returning a non-null value
	 * will effectively short-circuit the function.
	 *
	 * @since 3.1.0
	 *
	 * @param null|bool $check      Whether to allow updating metadata for the given type.
	 * @param int       $object_id  Object ID.
	 * @param string    $meta_key   Meta key.
	 * @param mixed     $meta_value Meta value. Must be serializable if non-scalar.
	 * @param mixed     $prev_value Optional. If specified, only update existing
	 *                              metadata entries with the specified value.
	 *                              Otherwise, update all entries.
	 */
	$check = apply_filters( "update_{$meta_type}_metadata", null, $object_id, $meta_key, $meta_value, $prev_value );
	if ( null !== $check ) {
		return (bool) $check;
	}

// Compare existing value to new value if no prev value given and the key exists only once.
	if ( empty( $prev_value ) ) {
		$old_value = get_metadata( $meta_type, $object_id, $meta_key );
		if ( count( $old_value ) == 1 ) {
			if ( $old_value[0] === $meta_value ) {
				return false;
			}
		}
	}

$meta_ids = $wpdb->get_col( $wpdb->prepare( "SELECT $id_column FROM $table WHERE meta_key = %s AND $column = %d", $meta_key, $object_id ) );
	if ( empty( $meta_ids ) ) {
		return add_metadata( $meta_type, $object_id, $raw_meta_key, $passed_value );
	}

$_meta_value = $meta_value;
	$meta_value  = maybe_serialize( $meta_value );

$data  = compact( 'meta_value' );
	$where = array(
		$column    => $object_id,
		'meta_key' => $meta_key,
	);

if ( ! empty( $prev_value ) ) {
		$prev_value          = maybe_serialize( $prev_value );
		$where['meta_value'] = $prev_value;
	}

foreach ( $meta_ids as $meta_id ) {
		/**
		 * Fires immediately before updating metadata of a specific type.
		 *
		 * The dynamic portion of the hook, `$meta_type`, refers to the meta
		 * object type (comment, post, term, or user).
		 *
		 * @since 2.9.0
		 *
		 * @param int    $meta_id     ID of the metadata entry to update.
		 * @param int    $object_id   Object ID.
		 * @param string $meta_key    Meta key.
		 * @param mixed  $_meta_value Meta value.
		 */
		do_action( "update_{$meta_type}_meta", $meta_id, $object_id, $meta_key, $_meta_value );

if ( 'post' == $meta_type ) {
			/**
			 * Fires immediately before updating a post's metadata.
			 *
			 * @since 2.9.0
			 *
			 * @param int    $meta_id    ID of metadata entry to update.
			 * @param int    $object_id  Post ID.
			 * @param string $meta_key   Meta key.
			 * @param mixed  $meta_value Meta value. This will be a PHP-serialized string representation of the value if
			 *                           the value is an array, an object, or itself a PHP-serialized string.
			 */
			do_action( 'update_postmeta', $meta_id, $object_id, $meta_key, $meta_value );
		}
	}

$result = $wpdb->update( $table, $data, $where );
	if ( ! $result ) {
		return false;
	}

wp_cache_delete( $object_id, $meta_type . '_meta' );

foreach ( $meta_ids as $meta_id ) {
		/**
		 * Fires immediately after updating metadata of a specific type.
		 *
		 * The dynamic portion of the hook, `$meta_type`, refers to the meta
		 * object type (comment, post, term, or user).
		 *
		 * @since 2.9.0
		 *
		 * @param int    $meta_id     ID of updated metadata entry.
		 * @param int    $object_id   Object ID.
		 * @param string $meta_key    Meta key.
		 * @param mixed  $_meta_value Meta value.
		 */
		do_action( "updated_{$meta_type}_meta", $meta_id, $object_id, $meta_key, $_meta_value );

if ( 'post' == $meta_type ) {
			/**
			 * Fires immediately after updating a post's metadata.
			 *
			 * @since 2.9.0
			 *
			 * @param int    $meta_id    ID of updated metadata entry.
			 * @param int    $object_id  Post ID.
			 * @param string $meta_key   Meta key.
			 * @param mixed  $meta_value Meta value. This will be a PHP-serialized string representation of the value if
			 *                           the value is an array, an object, or itself a PHP-serialized string.
			 */
			do_action( 'updated_postmeta', $meta_id, $object_id, $meta_key, $meta_value );
		}
	}

return true;
}

/**
 * Delete metadata for the specified object.
 *
 * @since 2.9.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param string $meta_type  Type of object metadata is for (e.g., comment, post, term, or user).
 * @param int    $object_id  ID of the object metadata is for
 * @param string $meta_key   Metadata key
 * @param mixed  $meta_value Optional. Metadata value. Must be serializable if non-scalar. If specified, only delete
 *                           metadata entries with this value. Otherwise, delete all entries with the specified meta_key.
 *                           Pass `null`, `false`, or an empty string to skip this check. (For backward compatibility,
 *                           it is not possible to pass an empty string to delete those entries with an empty string
 *                           for a value.)
 * @param bool   $delete_all Optional, default is false. If true, delete matching metadata entries for all objects,
 *                           ignoring the specified object_id. Otherwise, only delete matching metadata entries for
 *                           the specified object_id.
 * @return bool True on successful delete, false on failure.
 */
function delete_metadata( $meta_type, $object_id, $meta_key, $meta_value = '', $delete_all = false ) {
	global $wpdb;

if ( ! $meta_type || ! $meta_key || ! is_numeric( $object_id ) && ! $delete_all ) {
		return false;
	}

$object_id = absint( $object_id );
	if ( ! $object_id && ! $delete_all ) {
		return false;
	}

$table = _get_meta_table( $meta_type );
	if ( ! $table ) {
		return false;
	}

$type_column = sanitize_key( $meta_type . '_id' );
	$id_column   = 'user' == $meta_type ? 'umeta_id' : 'meta_id';
	// expected_slashed ($meta_key)
	$meta_key   = wp_unslash( $meta_key );
	$meta_value = wp_unslash( $meta_value );

/**
	 * Filters whether to delete metadata of a specific type.
	 *
	 * The dynamic portion of the hook, `$meta_type`, refers to the meta
	 * object type (comment, post, term, or user). Returning a non-null value
	 * will effectively short-circuit the function.
	 *
	 * @since 3.1.0
	 *
	 * @param null|bool $delete     Whether to allow metadata deletion of the given type.
	 * @param int       $object_id  Object ID.
	 * @param string    $meta_key   Meta key.
	 * @param mixed     $meta_value Meta value. Must be serializable if non-scalar.
	 * @param bool      $delete_all Whether to delete the matching metadata entries
	 *                              for all objects, ignoring the specified $object_id.
	 *                              Default false.
	 */
	$check = apply_filters( "delete_{$meta_type}_metadata", null, $object_id, $meta_key, $meta_value, $delete_all );
	if ( null !== $check ) {
		return (bool) $check;
	}

$_meta_value = $meta_value;
	$meta_value  = maybe_serialize( $meta_value );

$query = $wpdb->prepare( "SELECT $id_column FROM $table WHERE meta_key = %s", $meta_key );

if ( ! $delete_all ) {
		$query .= $wpdb->prepare( " AND $type_column = %d", $object_id );
	}

if ( '' !== $meta_value && null !== $meta_value && false !== $meta_value ) {
		$query .= $wpdb->prepare( ' AND meta_value = %s', $meta_value );
	}

$meta_ids = $wpdb->get_col( $query );
	if ( ! count( $meta_ids ) ) {
		return false;
	}

if ( $delete_all ) {
		if ( '' !== $meta_value && null !== $meta_value && false !== $meta_value ) {
			$object_ids = $wpdb->get_col( $wpdb->prepare( "SELECT $type_column FROM $table WHERE meta_key = %s AND meta_value = %s", $meta_key, $meta_value ) );
		} else {
			$object_ids = $wpdb->get_col( $wpdb->prepare( "SELECT $type_column FROM $table WHERE meta_key = %s", $meta_key ) );
		}
	}

/**
	 * Fires immediately before deleting metadata of a specific type.
	 *
	 * The dynamic portion of the hook, `$meta_type`, refers to the meta
	 * object type (comment, post, term, or user).
	 *
	 * @since 3.1.0
	 *
	 * @param array  $meta_ids    An array of metadata entry IDs to delete.
	 * @param int    $object_id   Object ID.
	 * @param string $meta_key    Meta key.
	 * @param mixed  $_meta_value Meta value.
	 */
	do_action( "delete_{$meta_type}_meta", $meta_ids, $object_id, $meta_key, $_meta_value );

// Old-style action.
	if ( 'post' == $meta_type ) {
		/**
		 * Fires immediately before deleting metadata for a post.
		 *
		 * @since 2.9.0
		 *
		 * @param array $meta_ids An array of post metadata entry IDs to delete.
		 */
		do_action( 'delete_postmeta', $meta_ids );
	}

$query = "DELETE FROM $table WHERE $id_column IN( " . implode( ',', $meta_ids ) . ' )';

$count = $wpdb->query( $query );

if ( ! $count ) {
		return false;
	}

if ( $delete_all ) {
		foreach ( (array) $object_ids as $o_id ) {
			wp_cache_delete( $o_id, $meta_type . '_meta' );
		}
	} else {
		wp_cache_delete( $object_id, $meta_type . '_meta' );
	}

/**
	 * Fires immediately after deleting metadata of a specific type.
	 *
	 * The dynamic portion of the hook name, `$meta_type`, refers to the meta
	 * object type (comment, post, term, or user).
	 *
	 * @since 2.9.0
	 *
	 * @param array  $meta_ids    An array of deleted metadata entry IDs.
	 * @param int    $object_id   Object ID.
	 * @param string $meta_key    Meta key.
	 * @param mixed  $_meta_value Meta value.
	 */
	do_action( "deleted_{$meta_type}_meta", $meta_ids, $object_id, $meta_key, $_meta_value );

// Old-style action.
	if ( 'post' == $meta_type ) {
		/**
		 * Fires immediately after deleting metadata for a post.
		 *
		 * @since 2.9.0
		 *
		 * @param array $meta_ids An array of deleted post metadata entry IDs.
		 */
		do_action( 'deleted_postmeta', $meta_ids );
	}

return true;
}

/**
 * Retrieve metadata for the specified object.
 *
 * @since 2.9.0
 *
 * @param string $meta_type Type of object metadata is for (e.g., comment, post, term, or user).
 * @param int    $object_id ID of the object metadata is for
 * @param string $meta_key  Optional. Metadata key. If not specified, retrieve all metadata for
 *                          the specified object.
 * @param bool   $single    Optional, default is false.
 *                          If true, return only the first value of the specified meta_key.
 *                          This parameter has no effect if meta_key is not specified.
 * @return mixed Single metadata value, or array of values
 */
function get_metadata( $meta_type, $object_id, $meta_key = '', $single = false ) {
	if ( ! $meta_type || ! is_numeric( $object_id ) ) {
		return false;
	}

$object_id = absint( $object_id );
	if ( ! $object_id ) {
		return false;
	}

/**
	 * Filters whether to retrieve metadata of a specific type.
	 *
	 * The dynamic portion of the hook, `$meta_type`, refers to the meta
	 * object type (comment, post, term, or user). Returning a non-null value
	 * will effectively short-circuit the function.
	 *
	 * @since 3.1.0
	 *
	 * @param null|array|string $value     The value get_metadata() should return - a single metadata value,
	 *                                     or an array of values.
	 * @param int               $object_id Object ID.
	 * @param string            $meta_key  Meta key.
	 * @param bool              $single    Whether to return only the first value of the specified $meta_key.
	 */
	$check = apply_filters( "get_{$meta_type}_metadata", null, $object_id, $meta_key, $single );
	if ( null !== $check ) {
		if ( $single && is_array( $check ) ) {
			return $check[0];
		} else {
			return $check;
		}
	}

$meta_cache = wp_cache_get( $object_id, $meta_type . '_meta' );

if ( ! $meta_cache ) {
		$meta_cache = update_meta_cache( $meta_type, array( $object_id ) );
		if ( isset( $meta_cache[ $object_id ] ) ) {
			$meta_cache = $meta_cache[ $object_id ];
		} else {
			$meta_cache = null;
		}
	}

if ( ! $meta_key ) {
		return $meta_cache;
	}

if ( isset( $meta_cache[ $meta_key ] ) ) {
		if ( $single ) {
			return maybe_unserialize( $meta_cache[ $meta_key ][0] );
		} else {
			return array_map( 'maybe_unserialize', $meta_cache[ $meta_key ] );
		}
	}

if ( $single ) {
		return '';
	} else {
		return array();
	}
}

/**
 * Determine if a meta key is set for a given object
 *
 * @since 3.3.0
 *
 * @param string $meta_type Type of object metadata is for (e.g., comment, post, term, or user).
 * @param int    $object_id ID of the object metadata is for
 * @param string $meta_key  Metadata key.
 * @return bool True of the key is set, false if not.
 */
function metadata_exists( $meta_type, $object_id, $meta_key ) {
	if ( ! $meta_type || ! is_numeric( $object_id ) ) {
		return false;
	}

$object_id = absint( $object_id );
	if ( ! $object_id ) {
		return false;
	}

/** This filter is documented in wp-includes/meta.php */
	$check = apply_filters( "get_{$meta_type}_metadata", null, $object_id, $meta_key, true );
	if ( null !== $check ) {
		return (bool) $check;
	}

$meta_cache = wp_cache_get( $object_id, $meta_type . '_meta' );

if ( ! $meta_cache ) {
		$meta_cache = update_meta_cache( $meta_type, array( $object_id ) );
		$meta_cache = $meta_cache[ $object_id ];
	}

if ( isset( $meta_cache[ $meta_key ] ) ) {
		return true;
	}

return false;
}

/**
 * Get meta data by meta ID
 *
 * @since 3.3.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param string $meta_type Type of object metadata is for (e.g., comment, post, term, or user).
 * @param int    $meta_id   ID for a specific meta row
 * @return object|false Meta object or false.
 */
function get_metadata_by_mid( $meta_type, $meta_id ) {
	global $wpdb;

if ( ! $meta_type || ! is_numeric( $meta_id ) || floor( $meta_id ) != $meta_id ) {
		return false;
	}

$meta_id = intval( $meta_id );
	if ( $meta_id <= 0 ) {
		return false;
	}

$table = _get_meta_table( $meta_type );
	if ( ! $table ) {
		return false;
	}

$id_column = ( 'user' == $meta_type ) ? 'umeta_id' : 'meta_id';

/**
	 * Filters whether to retrieve metadata of a specific type by meta ID.
	 *
	 * The dynamic portion of the hook, `$meta_type`, refers to the meta
	 * object type (comment, post, term, or user). Returning a non-null value
	 * will effectively short-circuit the function.
	 *
	 * @since 5.0.0
	 *
	 * @param mixed $value    The value get_metadata_by_mid() should return.
	 * @param int   $meta_id  Meta ID.
	 */
	$check = apply_filters( "get_{$meta_type}_metadata_by_mid", null, $meta_id );
	if ( null !== $check ) {
		return $check;
	}

$meta = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $table WHERE $id_column = %d", $meta_id ) );

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

if ( isset( $meta->meta_value ) ) {
		$meta->meta_value = maybe_unserialize( $meta->meta_value );
	}

return $meta;
}

/**
 * Update meta data by meta ID
 *
 * @since 3.3.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param string $meta_type  Type of object metadata is for (e.g., comment, post, term, or user).
 * @param int    $meta_id    ID for a specific meta row
 * @param string $meta_value Metadata value
 * @param string $meta_key   Optional, you can provide a meta key to update it
 * @return bool True on successful update, false on failure.
 */
function update_metadata_by_mid( $meta_type, $meta_id, $meta_value, $meta_key = false ) {
	global $wpdb;

// Make sure everything is valid.
	if ( ! $meta_type || ! is_numeric( $meta_id ) || floor( $meta_id ) != $meta_id ) {
		return false;
	}

$meta_id = intval( $meta_id );
	if ( $meta_id <= 0 ) {
		return false;
	}

$table = _get_meta_table( $meta_type );
	if ( ! $table ) {
		return false;
	}

$column    = sanitize_key( $meta_type . '_id' );
	$id_column = 'user' == $meta_type ? 'umeta_id' : 'meta_id';

/**
	 * Filters whether to update metadata of a specific type by meta ID.
	 *
	 * The dynamic portion of the hook, `$meta_type`, refers to the meta
	 * object type (comment, post, term, or user). Returning a non-null value
	 * will effectively short-circuit the function.
	 *
	 * @since 5.0.0
	 *
	 * @param null|bool   $check      Whether to allow updating metadata for the given type.
	 * @param int         $meta_id    Meta ID.
	 * @param mixed       $meta_value Meta value. Must be serializable if non-scalar.
	 * @param string|bool $meta_key   Meta key, if provided.
	 */
	$check = apply_filters( "update_{$meta_type}_metadata_by_mid", null, $meta_id, $meta_value, $meta_key );
	if ( null !== $check ) {
		return (bool) $check;
	}

// Fetch the meta and go on if it's found.
	$meta = get_metadata_by_mid( $meta_type, $meta_id );
	if ( $meta ) {
		$original_key = $meta->meta_key;
		$object_id    = $meta->{$column};

// If a new meta_key (last parameter) was specified, change the meta key,
		// otherwise use the original key in the update statement.
		if ( false === $meta_key ) {
			$meta_key = $original_key;
		} elseif ( ! is_string( $meta_key ) ) {
			return false;
		}

$meta_subtype = get_object_subtype( $meta_type, $object_id );

// Sanitize the meta
		$_meta_value = $meta_value;
		$meta_value  = sanitize_meta( $meta_key, $meta_value, $meta_type, $meta_subtype );
		$meta_value  = maybe_serialize( $meta_value );

// Format the data query arguments.
		$data = array(
			'meta_key'   => $meta_key,
			'meta_value' => $meta_value,
		);

// Format the where query arguments.
		$where               = array();
		$where[ $id_column ] = $meta_id;

/** This action is documented in wp-includes/meta.php */
		do_action( "update_{$meta_type}_meta", $meta_id, $object_id, $meta_key, $_meta_value );

if ( 'post' == $meta_type ) {
			/** This action is documented in wp-includes/meta.php */
			do_action( 'update_postmeta', $meta_id, $object_id, $meta_key, $meta_value );
		}

// Run the update query, all fields in $data are %s, $where is a %d.
		$result = $wpdb->update( $table, $data, $where, '%s', '%d' );
		if ( ! $result ) {
			return false;
		}

// Clear the caches.
		wp_cache_delete( $object_id, $meta_type . '_meta' );

/** This action is documented in wp-includes/meta.php */
		do_action( "updated_{$meta_type}_meta", $meta_id, $object_id, $meta_key, $_meta_value );

if ( 'post' == $meta_type ) {
			/** This action is documented in wp-includes/meta.php */
			do_action( 'updated_postmeta', $meta_id, $object_id, $meta_key, $meta_value );
		}

return true;
	}

// And if the meta was not found.
	return false;
}

/**
 * Delete meta data by meta ID
 *
 * @since 3.3.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param string $meta_type Type of object metadata is for (e.g., comment, post, term, or user).
 * @param int    $meta_id   ID for a specific meta row
 * @return bool True on successful delete, false on failure.
 */
function delete_metadata_by_mid( $meta_type, $meta_id ) {
	global $wpdb;

// Make sure everything is valid.
	if ( ! $meta_type || ! is_numeric( $meta_id ) || floor( $meta_id ) != $meta_id ) {
		return false;
	}

$meta_id = intval( $meta_id );
	if ( $meta_id <= 0 ) {
		return false;
	}

$table = _get_meta_table( $meta_type );
	if ( ! $table ) {
		return false;
	}

// object and id columns
	$column    = sanitize_key( $meta_type . '_id' );
	$id_column = 'user' == $meta_type ? 'umeta_id' : 'meta_id';

/**
	 * Filters whether to delete metadata of a specific type by meta ID.
	 *
	 * The dynamic portion of the hook, `$meta_type`, refers to the meta
	 * object type (comment, post, term, or user). Returning a non-null value
	 * will effectively short-circuit the function.
	 *
	 * @since 5.0.0
	 *
	 * @param null|bool $delete  Whether to allow metadata deletion of the given type.
	 * @param int       $meta_id Meta ID.
	 */
	$check = apply_filters( "delete_{$meta_type}_metadata_by_mid", null, $meta_id );
	if ( null !== $check ) {
		return (bool) $check;
	}

// Fetch the meta and go on if it's found.
	$meta = get_metadata_by_mid( $meta_type, $meta_id );
	if ( $meta ) {
		$object_id = (int) $meta->{$column};

/** This action is documented in wp-includes/meta.php */
		do_action( "delete_{$meta_type}_meta", (array) $meta_id, $object_id, $meta->meta_key, $meta->meta_value );

// Old-style action.
		if ( 'post' == $meta_type || 'comment' == $meta_type ) {
			/**
			 * Fires immediately before deleting post or comment metadata of a specific type.
			 *
			 * The dynamic portion of the hook, `$meta_type`, refers to the meta
			 * object type (post or comment).
			 *
			 * @since 3.4.0
			 *
			 * @param int $meta_id ID of the metadata entry to delete.
			 */
			do_action( "delete_{$meta_type}meta", $meta_id );
		}

// Run the query, will return true if deleted, false otherwise
		$result = (bool) $wpdb->delete( $table, array( $id_column => $meta_id ) );

// Clear the caches.
		wp_cache_delete( $object_id, $meta_type . '_meta' );

/** This action is documented in wp-includes/meta.php */
		do_action( "deleted_{$meta_type}_meta", (array) $meta_id, $object_id, $meta->meta_key, $meta->meta_value );

// Old-style action.
		if ( 'post' == $meta_type || 'comment' == $meta_type ) {
			/**
			 * Fires immediately after deleting post or comment metadata of a specific type.
			 *
			 * The dynamic portion of the hook, `$meta_type`, refers to the meta
			 * object type (post or comment).
			 *
			 * @since 3.4.0
			 *
			 * @param int $meta_ids Deleted metadata entry ID.
			 */
			do_action( "deleted_{$meta_type}meta", $meta_id );
		}

return $result;

}

// Meta id was not found.
	return false;
}

/**
 * Update the metadata cache for the specified objects.
 *
 * @since 2.9.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param string       $meta_type  Type of object metadata is for (e.g., comment, post, term, or user).
 * @param string|int[] $object_ids Array or comma delimited list of object IDs to update cache for.
 * @return array|false Metadata cache for the specified objects, or false on failure.
 */
function update_meta_cache( $meta_type, $object_ids ) {
	global $wpdb;

if ( ! $meta_type || ! $object_ids ) {
		return false;
	}

$table = _get_meta_table( $meta_type );
	if ( ! $table ) {
		return false;
	}

$column = sanitize_key( $meta_type . '_id' );

if ( ! is_array( $object_ids ) ) {
		$object_ids = preg_replace( '|[^0-9,]|', '', $object_ids );
		$object_ids = explode( ',', $object_ids );
	}

$object_ids = array_map( 'intval', $object_ids );

/**
	 * Filters whether to update the metadata cache of a specific type.
	 *
	 * The dynamic portion of the hook, `$meta_type`, refers to the meta
	 * object type (comment, post, term, or user). Returning a non-null value
	 * will effectively short-circuit the function.
	 *
	 * @since 5.0.0
	 *
	 * @param mixed $check      Whether to allow updating the meta cache of the given type.
	 * @param int[] $object_ids Array of object IDs to update the meta cache for.
	 */
	$check = apply_filters( "update_{$meta_type}_metadata_cache", null, $object_ids );
	if ( null !== $check ) {
		return (bool) $check;
	}

$cache_key = $meta_type . '_meta';
	$ids       = array();
	$cache     = array();
	foreach ( $object_ids as $id ) {
		$cached_object = wp_cache_get( $id, $cache_key );
		if ( false === $cached_object ) {
			$ids[] = $id;
		} else {
			$cache[ $id ] = $cached_object;
		}
	}

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

// Get meta info
	$id_list   = join( ',', $ids );
	$id_column = 'user' == $meta_type ? 'umeta_id' : 'meta_id';
	$meta_list = $wpdb->get_results( "SELECT $column, meta_key, meta_value FROM $table WHERE $column IN ($id_list) ORDER BY $id_column ASC", ARRAY_A );

if ( ! empty( $meta_list ) ) {
		foreach ( $meta_list as $metarow ) {
			$mpid = intval( $metarow[ $column ] );
			$mkey = $metarow['meta_key'];
			$mval = $metarow['meta_value'];

// Force subkeys to be array type:
			if ( ! isset( $cache[ $mpid ] ) || ! is_array( $cache[ $mpid ] ) ) {
				$cache[ $mpid ] = array();
			}
			if ( ! isset( $cache[ $mpid ][ $mkey ] ) || ! is_array( $cache[ $mpid ][ $mkey ] ) ) {
				$cache[ $mpid ][ $mkey ] = array();
			}

// Add a value to the current pid/key:
			$cache[ $mpid ][ $mkey ][] = $mval;
		}
	}

foreach ( $ids as $id ) {
		if ( ! isset( $cache[ $id ] ) ) {
			$cache[ $id ] = array();
		}
		wp_cache_add( $id, $cache[ $id ], $cache_key );
	}

return $cache;
}

/**
 * Retrieves the queue for lazy-loading metadata.
 *
 * @since 4.5.0
 *
 * @return WP_Metadata_Lazyloader $lazyloader Metadata lazyloader queue.
 */
function wp_metadata_lazyloader() {
	static $wp_metadata_lazyloader;

if ( null === $wp_metadata_lazyloader ) {
		$wp_metadata_lazyloader = new WP_Metadata_Lazyloader();
	}

return $wp_metadata_lazyloader;
}

/**
 * Given a meta query, generates SQL clauses to be appended to a main query.
 *
 * @since 3.2.0
 *
 * @see WP_Meta_Query
 *
 * @param array $meta_query         A meta query.
 * @param string $type              Type of meta.
 * @param string $primary_table     Primary database table name.
 * @param string $primary_id_column Primary ID column name.
 * @param object $context           Optional. The main query object
 * @return array Associative array of `JOIN` and `WHERE` SQL.
 */
function get_meta_sql( $meta_query, $type, $primary_table, $primary_id_column, $context = null ) {
	$meta_query_obj = new WP_Meta_Query( $meta_query );
	return $meta_query_obj->get_sql( $type, $primary_table, $primary_id_column, $context );
}

/**
 * Retrieve the name of the metadata table for the specified object type.
 *
 * @since 2.9.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param string $type Type of object to get metadata table for (e.g., comment, post, term, or user).
 * @return string|false Metadata table name, or false if no metadata table exists
 */
function _get_meta_table( $type ) {
	global $wpdb;

$table_name = $type . 'meta';

if ( empty( $wpdb->$table_name ) ) {
		return false;
	}

return $wpdb->$table_name;
}

/**
 * Determines whether a meta key is considered protected.
 *
 * @since 3.1.3
 *
 * @param string      $meta_key  Meta key.
 * @param string|null $meta_type Optional. Type of object metadata is for (e.g., comment, post, term, or user).
 * @return bool Whether the meta key is considered protected.
 */
function is_protected_meta( $meta_key, $meta_type = '' ) {
	$sanitized_key = preg_replace( "/[^\x20-\x7E\p{L}]/", '', $meta_key );
	$protected     = strlen( $sanitized_key ) > 0 && ( '_' === $sanitized_key[0] );

/**
	 * Filters whether a meta key is considered protected.
	 *
	 * @since 3.2.0
	 *
	 * @param bool        $protected Whether the key is considered protected.
	 * @param string      $meta_key  Meta key.
	 * @param string|null $meta_type Type of object metadata is for (e.g., comment, post, term, or user).
	 */
	return apply_filters( 'is_protected_meta', $protected, $meta_key, $meta_type );
}

/**
 * Sanitize meta value.
 *
 * @since 3.1.3
 * @since 4.9.8 The `$object_subtype` parameter was added.
 *
 * @param string $meta_key       Meta key.
 * @param mixed  $meta_value     Meta value to sanitize.
 * @param string $object_type    Type of object the meta is registered to.
 * @param string $object_subtype Optional. The subtype of the object type.
 *
 * @return mixed Sanitized $meta_value.
 */
function sanitize_meta( $meta_key, $meta_value, $object_type, $object_subtype = '' ) {
	if ( ! empty( $object_subtype ) && has_filter( "sanitize_{$object_type}_meta_{$meta_key}_for_{$object_subtype}" ) ) {

/**
		 * Filters the sanitization of a specific meta key of a specific meta type and subtype.
		 *
		 * The dynamic portions of the hook name, `$object_type`, `$meta_key`,
		 * and `$object_subtype`, refer to the metadata object type (comment, post, term, or user),
		 * the meta key value, and the object subtype respectively.
		 *
		 * @since 4.9.8
		 *
		 * @param mixed  $meta_value     Meta value to sanitize.
		 * @param string $meta_key       Meta key.
		 * @param string $object_type    Object type.
		 * @param string $object_subtype Object subtype.
		 */
		return apply_filters( "sanitize_{$object_type}_meta_{$meta_key}_for_{$object_subtype}", $meta_value, $meta_key, $object_type, $object_subtype );
	}

/**
	 * Filters the sanitization of a specific meta key of a specific meta type.
	 *
	 * The dynamic portions of the hook name, `$meta_type`, and `$meta_key`,
	 * refer to the metadata object type (comment, post, term, or user) and the meta
	 * key value, respectively.
	 *
	 * @since 3.3.0
	 *
	 * @param mixed  $meta_value      Meta value to sanitize.
	 * @param string $meta_key        Meta key.
	 * @param string $object_type     Object type.
	 */
	return apply_filters( "sanitize_{$object_type}_meta_{$meta_key}", $meta_value, $meta_key, $object_type );
}

/**
 * Registers a meta key.
 *
 * It is recommended to register meta keys for a specific combination of object type and object subtype. If passing
 * an object subtype is omitted, the meta key will be registered for the entire object type, however it can be partly
 * overridden in case a more specific meta key of the same name exists for the same object type and a subtype.
 *
 * If an object type does not support any subtypes, such as users or comments, you should commonly call this function
 * without passing a subtype.
 *
 * @since 3.3.0
 * @since 4.6.0 {@link https://core.trac.wordpress.org/ticket/35658 Modified
 *              to support an array of data to attach to registered meta keys}. Previous arguments for
 *              `$sanitize_callback` and `$auth_callback` have been folded into this array.
 * @since 4.9.8 The `$object_subtype` argument was added to the arguments array.
 * @since 5.3.0 Valid meta types expanded to include "array" and "object".
 *
 * @param string $object_type    Type of object this meta is registered to.
 * @param string $meta_key       Meta key to register.
 * @param array  $args {
 *     Data used to describe the meta key when registered.
 *
 *     @type string     $object_subtype    A subtype; e.g. if the object type is "post", the post type. If left empty,
 *                                         the meta key will be registered on the entire object type. Default empty.
 *     @type string     $type              The type of data associated with this meta key.
 *                                         Valid values are 'string', 'boolean', 'integer', 'number', 'array', and 'object'.
 *     @type string     $description       A description of the data attached to this meta key.
 *     @type bool       $single            Whether the meta key has one value per object, or an array of values per object.
 *     @type string     $sanitize_callback A function or method to call when sanitizing `$meta_key` data.
 *     @type string     $auth_callback     Optional. A function or method to call when performing edit_post_meta,
 *                                         add_post_meta, and delete_post_meta capability checks.
 *     @type bool|array $show_in_rest      Whether data associated with this meta key can be considered public and
 *                                         should be accessible via the REST API. A custom post type must also declare
 *                                         support for custom fields for registered meta to be accessible via REST.
 *                                         When registering complex meta values this argument may optionally be an
 *                                         array with 'schema' or 'prepare_callback' keys instead of a boolean.
 * }
 * @param string|array $deprecated Deprecated. Use `$args` instead.
 *
 * @return bool True if the meta key was successfully registered in the global array, false if not.
 *                       Registering a meta key with distinct sanitize and auth callbacks will fire those
 *                       callbacks, but will not add to the global registry.
 */
function register_meta( $object_type, $meta_key, $args, $deprecated = null ) {
	global $wp_meta_keys;

if ( ! is_array( $wp_meta_keys ) ) {
		$wp_meta_keys = array();
	}

$defaults = array(
		'object_subtype'    => '',
		'type'              => 'string',
		'description'       => '',
		'single'            => false,
		'sanitize_callback' => null,
		'auth_callback'     => null,
		'show_in_rest'      => false,
	);

// There used to be individual args for sanitize and auth callbacks
	$has_old_sanitize_cb = false;
	$has_old_auth_cb     = false;

if ( is_callable( $args ) ) {
		$args = array(
			'sanitize_callback' => $args,
		);

$has_old_sanitize_cb = true;
	} else {
		$args = (array) $args;
	}

if ( is_callable( $deprecated ) ) {
		$args['auth_callback'] = $deprecated;
		$has_old_auth_cb       = true;
	}

/**
	 * Filters the registration arguments when registering meta.
	 *
	 * @since 4.6.0
	 *
	 * @param array  $args        Array of meta registration arguments.
	 * @param array  $defaults    Array of default arguments.
	 * @param string $object_type Object type.
	 * @param string $meta_key    Meta key.
	 */
	$args = apply_filters( 'register_meta_args', $args, $defaults, $object_type, $meta_key );
	$args = wp_parse_args( $args, $defaults );

// Require an item schema when registering array meta.
	if ( false !== $args['show_in_rest'] && 'array' === $args['type'] ) {
		if ( ! is_array( $args['show_in_rest'] ) || ! isset( $args['show_in_rest']['schema']['items'] ) ) {
			_doing_it_wrong( __FUNCTION__, __( 'When registering an "array" meta type to show in the REST API, you must specify the schema for each array item in "show_in_rest.schema.items".' ), '5.3.0' );

return false;
		}
	}

$object_subtype = ! empty( $args['object_subtype'] ) ? $args['object_subtype'] : '';

// If `auth_callback` is not provided, fall back to `is_protected_meta()`.
	if ( empty( $args['auth_callback'] ) ) {
		if ( is_protected_meta( $meta_key, $object_type ) ) {
			$args['auth_callback'] = '__return_false';
		} else {
			$args['auth_callback'] = '__return_true';
		}
	}

// Back-compat: old sanitize and auth callbacks are applied to all of an object type.
	if ( is_callable( $args['sanitize_callback'] ) ) {
		if ( ! empty( $object_subtype ) ) {
			add_filter( "sanitize_{$object_type}_meta_{$meta_key}_for_{$object_subtype}", $args['sanitize_callback'], 10, 4 );
		} else {
			add_filter( "sanitize_{$object_type}_meta_{$meta_key}", $args['sanitize_callback'], 10, 3 );
		}
	}

if ( is_callable( $args['auth_callback'] ) ) {
		if ( ! empty( $object_subtype ) ) {
			add_filter( "auth_{$object_type}_meta_{$meta_key}_for_{$object_subtype}", $args['auth_callback'], 10, 6 );
		} else {
			add_filter( "auth_{$object_type}_meta_{$meta_key}", $args['auth_callback'], 10, 6 );
		}
	}

// Global registry only contains meta keys registered with the array of arguments added in 4.6.0.
	if ( ! $has_old_auth_cb && ! $has_old_sanitize_cb ) {
		unset( $args['object_subtype'] );

$wp_meta_keys[ $object_type ][ $object_subtype ][ $meta_key ] = $args;

return true;
	}

return false;
}

/**
 * Checks if a meta key is registered.
 *
 * @since 4.6.0
 * @since 4.9.8 The `$object_subtype` parameter was added.
 *
 * @param string $object_type    The type of object.
 * @param string $meta_key       The meta key.
 * @param string $object_subtype Optional. The subtype of the object type.
 *
 * @return bool True if the meta key is registered to the object type and, if provided,
 *              the object subtype. False if not.
 */
function registered_meta_key_exists( $object_type, $meta_key, $object_subtype = '' ) {
	$meta_keys = get_registered_meta_keys( $object_type, $object_subtype );

return isset( $meta_keys[ $meta_key ] );
}

/**
 * Unregisters a meta key from the list of registered keys.
 *
 * @since 4.6.0
 * @since 4.9.8 The `$object_subtype` parameter was added.
 *
 * @param string $object_type    The type of object.
 * @param string $meta_key       The meta key.
 * @param string $object_subtype Optional. The subtype of the object type.
 * @return bool True if successful. False if the meta key was not registered.
 */
function unregister_meta_key( $object_type, $meta_key, $object_subtype = '' ) {
	global $wp_meta_keys;

if ( ! registered_meta_key_exists( $object_type, $meta_key, $object_subtype ) ) {
		return false;
	}

$args = $wp_meta_keys[ $object_type ][ $object_subtype ][ $meta_key ];

if ( isset( $args['sanitize_callback'] ) && is_callable( $args['sanitize_callback'] ) ) {
		if ( ! empty( $object_subtype ) ) {
			remove_filter( "sanitize_{$object_type}_meta_{$meta_key}_for_{$object_subtype}", $args['sanitize_callback'] );
		} else {
			remove_filter( "sanitize_{$object_type}_meta_{$meta_key}", $args['sanitize_callback'] );
		}
	}

if ( isset( $args['auth_callback'] ) && is_callable( $args['auth_callback'] ) ) {
		if ( ! empty( $object_subtype ) ) {
			remove_filter( "auth_{$object_type}_meta_{$meta_key}_for_{$object_subtype}", $args['auth_callback'] );
		} else {
			remove_filter( "auth_{$object_type}_meta_{$meta_key}", $args['auth_callback'] );
		}
	}

unset( $wp_meta_keys[ $object_type ][ $object_subtype ][ $meta_key ] );

// Do some clean up
	if ( empty( $wp_meta_keys[ $object_type ][ $object_subtype ] ) ) {
		unset( $wp_meta_keys[ $object_type ][ $object_subtype ] );
	}
	if ( empty( $wp_meta_keys[ $object_type ] ) ) {
		unset( $wp_meta_keys[ $object_type ] );
	}

return true;
}

/**
 * Retrieves a list of registered meta keys for an object type.
 *
 * @since 4.6.0
 * @since 4.9.8 The `$object_subtype` parameter was added.
 *
 * @param string $object_type    The type of object. Post, comment, user, term.
 * @param string $object_subtype Optional. The subtype of the object type.
 * @return array List of registered meta keys.
 */
function get_registered_meta_keys( $object_type, $object_subtype = '' ) {
	global $wp_meta_keys;

if ( ! is_array( $wp_meta_keys ) || ! isset( $wp_meta_keys[ $object_type ] ) || ! isset( $wp_meta_keys[ $object_type ][ $object_subtype ] ) ) {
		return array();
	}

return $wp_meta_keys[ $object_type ][ $object_subtype ];
}

/**
 * Retrieves registered metadata for a specified object.
 *
 * The results include both meta that is registered specifically for the
 * object's subtype and meta that is registered for the entire object type.
 *
 * @since 4.6.0
 *
 * @param string $object_type Type of object to request metadata for. (e.g. comment, post, term, user)
 * @param int    $object_id   ID of the object the metadata is for.
 * @param string $meta_key    Optional. Registered metadata key. If not specified, retrieve all registered
 *                            metadata for the specified object.
 * @return mixed A single value or array of values for a key if specified. An array of all registered keys
 *               and values for an object ID if not. False if a given $meta_key is not registered.
 */
function get_registered_metadata( $object_type, $object_id, $meta_key = '' ) {
	$object_subtype = get_object_subtype( $object_type, $object_id );

if ( ! empty( $meta_key ) ) {
		if ( ! empty( $object_subtype ) && ! registered_meta_key_exists( $object_type, $meta_key, $object_subtype ) ) {
			$object_subtype = '';
		}

if ( ! registered_meta_key_exists( $object_type, $meta_key, $object_subtype ) ) {
			return false;
		}

$meta_keys     = get_registered_meta_keys( $object_type, $object_subtype );
		$meta_key_data = $meta_keys[ $meta_key ];

$data = get_metadata( $object_type, $object_id, $meta_key, $meta_key_data['single'] );

return $data;
	}

$data = get_metadata( $object_type, $object_id );
	if ( ! $data ) {
		return array();
	}

$meta_keys = get_registered_meta_keys( $object_type );
	if ( ! empty( $object_subtype ) ) {
		$meta_keys = array_merge( $meta_keys, get_registered_meta_keys( $object_type, $object_subtype ) );
	}

return array_intersect_key( $data, $meta_keys );
}

/**
 * Filter out `register_meta()` args based on a whitelist.
 * `register_meta()` args may change over time, so requiring the whitelist
 * to be explicitly turned off is a warranty seal of sorts.
 *
 * @access private
 * @since 4.6.0
 *
 * @param array $args         Arguments from `register_meta()`.
 * @param array $default_args Default arguments for `register_meta()`.
 *
 * @return array Filtered arguments.
 */
function _wp_register_meta_args_whitelist( $args, $default_args ) {
	return array_intersect_key( $args, $default_args );
}

/**
 * Returns the object subtype for a given object ID of a specific type.
 *
 * @since 4.9.8
 *
 * @param string $object_type Type of object to request metadata for. (e.g. comment, post, term, user)
 * @param int    $object_id   ID of the object to retrieve its subtype.
 * @return string The object subtype or an empty string if unspecified subtype.
 */
function get_object_subtype( $object_type, $object_id ) {
	$object_id      = (int) $object_id;
	$object_subtype = '';

switch ( $object_type ) {
		case 'post':
			$post_type = get_post_type( $object_id );

if ( ! empty( $post_type ) ) {
				$object_subtype = $post_type;
			}
			break;

case 'term':
			$term = get_term( $object_id );
			if ( ! $term instanceof WP_Term ) {
				break;
			}

$object_subtype = $term->taxonomy;
			break;

case 'comment':
			$comment = get_comment( $object_id );
			if ( ! $comment ) {
				break;
			}

$object_subtype = 'comment';
			break;

case 'user':
			$user = get_user_by( 'id', $object_id );
			if ( ! $user ) {
				break;
			}

$object_subtype = 'user';
			break;
	}

/**
	 * Filters the object subtype identifier for a non standard object type.
	 *
	 * The dynamic portion of the hook, `$object_type`, refers to the object
	 * type (post, comment, term, or user).
	 *
	 * @since 4.9.8
	 *
	 * @param string $object_subtype Empty string to override.
	 * @param int    $object_id      ID of the object to get the subtype for.
	 */
	return apply_filters( "get_object_subtype_{$object_type}", $object_subtype, $object_id );
}

cmd: