phpbb\install\helper\iohandler\iohandler_interface::redirect PHP Method

    public function redirect($url, $use_ajax = false);

 /**
  * Redirects an AJAX request to a non-JS version
  *
  * @param string	$url	URL to redirect to
  */
 public function redirect_to_html($url)
 {
     $this->iohandler->redirect($url);
     $this->iohandler->send_response(true);
 }