function task_choose_end()
 {
     $task_list = db_factory::query(sprintf("select * from %switkey_task where task_status=3 and end_time<'%s' and model_id=5", TABLEPRE, time()));
     if (is_array($task_list)) {
         foreach ($task_list as $v) {
             $task_obj = new dtender_task_class($v);
             $task_obj->task_xb_timeout();
         }
     }
 }