/**
  * 判断是否可修改
  * @access private
  * @return true|false
  */
 private function verify($status = '10000')
 {
     $id = get_post_value('bulletin_id');
     $m = new Bulletin();
     $m->clear();
     $m->setTable('vcb_bulletin');
     $m->setWhere('bulletin_id', '=', $id);
     $m->setWhere('status', '=', $status);
     $data = $m->getFieldValue('COUNT(*)');
     return $data > 0 ? false : true;
 }