Fires just before pinging back links found in a post.
$post_linksstring[]$pungstring[]$post_idintwp-includes/comment.php:3578pingback() * @since 2.0.0 * * @param string[] $post_links Array of link URLs to be checked (passed by reference). * @param string[] $pung Array of link URLs already pinged (passed by reference). * @param int $post_id The post ID. */ do_action_ref_array( 'pre_ping', array( &$post_links, &$pung, $post->ID ) ); foreach ( (array) $post_links as $pagelinkedto ) { $pingback_server_url = discover_pingback_server_uri( $pagelinkedto ); if ( $pingback_server_url ) { // Allow an additional 60 seconds for each pingback to complete.Introduced in 2.0.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.