register_taxonomy_for_object_type( string $taxonomy, string $object_type ): bool

768function register_taxonomy_for_object_type( $taxonomy, $object_type ) {769	global $wp_taxonomies;770 771	if ( ! isset( $wp_taxonomies[ $taxonomy ] ) ) {772		return false;773	}774 775	if ( ! get_post_type_object( $object_type ) ) {776		return false;777	}778 779	if ( ! in_array( $object_type, $wp_taxonomies[ $taxonomy ]->object_type, true ) ) {780		$wp_taxonomies[ $taxonomy ]->object_type[] = $object_type;781	}782 783	// Filter out empties.784	$wp_taxonomies[ $taxonomy ]->object_type = array_filter( $wp_taxonomies[ $taxonomy ]->object_type );785 786	/**787	 * Fires after a taxonomy is registered for an object type.788	 *789	 * @since 5.1.0790	 *791	 * @param string $taxonomy    Taxonomy name.792	 * @param string $object_type Name of the object type.793	 */794	do_action( 'registered_taxonomy_for_object_type', $taxonomy, $object_type );795 796	return true;797}