trackback( string $trackback_url, string $title, string $excerpt, int $ID ): int|false|void
Sends a Trackback.
Description
Updates database when sending trackback to prevent duplicates.
Parameters
-
$trackback_urlstring Required -
URL to send trackbacks.
-
$titlestring Required -
Title of post.
-
$excerptstring Required -
Excerpt of post.
-
$IDint Required -
Post ID.
Return
int|false|void Database query from update.
Source
File: wp-includes/comment.php.
View all references
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 |
|---|---|
| 0.71 | Introduced. |