function get($key) { $gets['sid'] = $this->shard_id; $gets['limit'] = 1; $gets['order'] = ''; $gets['select'] = 'id,cvalue,expire'; $gets['ckey'] = $key; $rs = $this->model->gets($gets); if (empty($rs)) { return false; } return $this->_filter_expire($rs[0]); }