Thinkphp add addAll

add用户添加一条数据。项目实例
public function treeinsert(){
           $data=array();
           $data['id']='';
           $data['type']='0';
           $data['title']=$_REQUEST['name'];
           $data['level']=$_REQUEST['level'];
           $data['pid']=$_REQUEST['ids'];
           $data['sort']='0';
           $data['status']='1';
           $data['rules']='';
           $data['Mome']='';
           $data['remarks']='';
           $user=M('worktelgroup');
           $user->add($data);

      }

addAll是往数据库中同时添加多条数据，数据为二维数组、同时二维数组的键由0开始，项目实例：
public function telnode(){
           $itemid = I('post.itemid');
           $data=I('post.data');
           $insert=array();
           foreach ($data as $k => $v) {
               $insert[$k]['id']='';
               $insert[$k]['wtelid']=str_replace('s', '', $v['id']);
               $insert[$k]['itemid']=$itemid;
           }
           //var_dump($insert);
           $user=M('item_worktel');
           $user->addAll($insert);
      }
组成的$insert数据结构如下：
array(2) {
  [0]=>
  array(3) {
    ["id"]=>
    string(0) ""
    ["wtelid"]=>
    string(1) "2"
    ["itemid"]=>
    string(1) "9"
  }
  [1]=>
  array(3) {
    ["id"]=>
    string(0) ""
    ["wtelid"]=>
    string(2) "11"
    ["itemid"]=>
    string(1) "9"
  }
}