Retrieves a list of registered metadata args for an object type, keyed by their meta keys.

$object_type string Required

Type of object metadata is for. Accepts 'post', 'comment', 'term', 'user', or any other object type with an associated meta table.

$object_subtype string Optional

The subtype of the object type.

Default: ''

array[] List of registered metadata args, keyed by their meta keys.

File: wp-includes/meta.php. View all references

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 ];
}