trackback( string $trackback_url, string $title, string $excerpt, int $ID )
Send a Trackback.
Description
Updates database when sending trackback to prevent duplicates.
Parameters
- $trackback_url
-
(string) (Required) URL to send trackbacks.
- $title
-
(string) (Required) Title of post.
- $excerpt
-
(string) (Required) Excerpt of post.
- $ID
-
(int) (Required) Post ID.
Return
(int|false|void) Database query from update.
Source
File: wp-includes/comment.php
function trackback($trackback_url, $title, $excerpt, $ID) {
global $wpdb;
if ( empty($trackback_url) )
return;
$options = array();
$options['timeout'] = 10;
$options['body'] = array(
'title' => $title,
'url' => get_permalink($ID),
'blog_name' => get_option('blogname'),
'excerpt' => $excerpt
);
$response = wp_safe_remote_post( $trackback_url, $options );
if ( is_wp_error( $response ) )
return;
$wpdb->query( $wpdb->prepare("UPDATE $wpdb->posts SET pinged = CONCAT(pinged, '\n', %s) WHERE ID = %d", $trackback_url, $ID) );
return $wpdb->query( $wpdb->prepare("UPDATE $wpdb->posts SET to_ping = TRIM(REPLACE(to_ping, %s, '')) WHERE ID = %d", $trackback_url, $ID) );
}
Changelog
| Version | Description |
|---|---|
| WP-0.71 | Introduced. |