get_to_ping() │ WP 1.5.0

Retrieves URLs that need to be pinged.

Hooks from the function

Returns

String[]|false. List of URLs yet to ping.

Usage

get_to_ping( $post );
$post(int|WP_Post) (required)
Post ID or post object.

Changelog

Since 1.5.0 Introduced.
Since 4.7.0 $post can be a WP_Post object.

get_to_ping() code WP 6.9.1

wp-includes/post.php 
function get_to_ping( $post ) {
	$post = get_post( $post );

	if ( ! $post ) {
		return false;
	}

	$to_ping = sanitize_trackback_urls( $post->to_ping );
	$to_ping = preg_split( '/\s/', $to_ping, -1, PREG_SPLIT_NO_EMPTY );

	/**
	 * Filters the list of URLs yet to ping for the given post.
	 *
	 * @since 2.0.0
	 *
	 * @param string[] $to_ping List of URLs yet to ping.
	 */
	return apply_filters( 'get_to_ping', $to_ping );
}