AreaModel::getAreaById PHP Method

    public function getAreaById($id)
    {
        $result = array();
        if (!empty($id)) {
            $name = 'ts_area_aid_' . $id;
            $result = S($name);
            if (!$result) {
                $map['area_id'] = $id;
                $result = $this->where($map)->find();
                S($name, $result);
            }
        }
        return $result;
    }