if (isset($_REQUEST['event_end_date']) && $_REQUEST['event_end_date'] != '') {
      if (DateTime::createFromFormat("Y-m-d", trim($_REQUEST['event_end_date']))) {
        $event_end_date = DateTime::createFromFormat("Y-m-d", trim($_REQUEST['event_end_date']))->getTimestamp();
      } else {
          $ok = false;