wp_delete_post_revision( int|WP_Post $revision ): WP_Post|false|null

617function wp_delete_post_revision( $revision ) {618	$revision = wp_get_post_revision( $revision );619 620	if ( ! $revision ) {621		return $revision;622	}623 624	$delete = wp_delete_post( $revision->ID );625 626	if ( $delete ) {627		/**628		 * Fires once a post revision has been deleted.629		 *630		 * @since 2.6.0631		 *632		 * @param int     $revision_id Post revision ID.633		 * @param WP_Post $revision    Post revision object.634		 */635		do_action( 'wp_delete_post_revision', $revision->ID, $revision );636	}637 638	return $delete;639}