function getListByParentIdCache($parentId, $expire = 0) { $memcache = new MMCache(); $mmckey = "Department_List_" . $this->ParentId; $list = $memcache->getValue($mmckey); if ($list) { return $list; } else { $data = $this->getListByParentId($parentId); if ($data["Data"]) { $memcache->setValue($mmckey, $data, $expire); } return $data; } }