get_to_ping( int|WP_Post $post ): string[]|false

5909function get_to_ping( $post ) {5910	$post = get_post( $post );5911 5912	if ( ! $post ) {5913		return false;5914	}5915 5916	$to_ping = sanitize_trackback_urls( $post->to_ping );5917	$to_ping = preg_split( '/\s/', $to_ping, -1, PREG_SPLIT_NO_EMPTY );5918 5919	/**5920	 * Filters the list of URLs yet to ping for the given post.5921	 *5922	 * @since 2.0.05923	 *5924	 * @param string[] $to_ping List of URLs yet to ping.5925	 */5926	return apply_filters( 'get_to_ping', $to_ping );5927}