wp-includes/class-wp-xmlrpc-server.php:7217Sends a pingback error based on the given error code and message.
$codeint$messagestringIXR_ErrorOne hook fires while wp_xmlrpc_server::pingback_error() runs, in this order:
Filters the XML-RPC pingback error return.
protected function pingback_error( $code, $message ) { /** * Filters the XML-RPC pingback error return. * * @since 3.5.1 * * @param IXR_Error $error An IXR_Error object containing the error code and message. */ return apply_filters( 'xmlrpc_pingback_error', new IXR_Error( $code, $message ) ); }Introduced in 3.6.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-xmlrpc-server.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.