tp5의 트랜잭션 처리

예1:

function shiwu(){
// 
$this->startTrans();
//  
$data['video_status']=1;
$video_id=$this->insertGetId($data); //  
if ($video_id){
//  
$this->commit();
return $video_id;
}else{
//  
$this->rollback();
}
}

예2:

// 
    public function chuli(){
         db::startTrans();
         $res = db('blog')->delete('14');
         $res1 = db('blog')->delete('13');
         if ($res && $res1){
            //  
            db::commit();
            echo "1";
        }else{
            //  
            db::rollback();
            echo "2";
        }

    }

예3:

public function down(){
$user = session('usernames');
if(isset($user)){
db::startTrans();// 
$res1 = db('')->del();
$res2 = db('')->del();
if($res1&&$res2){
db::commit();
return json(['status'=>'1','msg'=>' 5!']);
}else{
db::rollback();
return json(['status'=>'0','msg'=>' ']);
}

}else{
return json(['status'=>'0','msg'=>' !']);
}
}