ThinkPHP数据库驱动之mysql事物回滚

1、开启事务方法 startTrans()
2、事务提交方法 commit()
3、事务回滚方法 rollback()

用法例子:

$order = M(‘order’);
$allAdded = true; //先设定一个值为 true;
$data['name'] = 'winter';
$order->startTrans(); //开启事物
for($i = 1;$i<3;$i++){ 
    $sign = $order->add($data); //添加一条数据到order表
    if(!$sign){
        $order->rollback(); //如果order添加失败事物回滚
        $allAdded = false; //并且把allAdded设置为 false
    }
}
//回滚
if($allAdded){
    $order->commit(); 
    // 如果allAdded为真则两条数据都成功；那么 commit事物提交
    echo '添加成功';
}else{
    echo '添加失败';
}

如果commit了。那么就提交插入数据。如果发现alladded为假说明有条数据没插入正确。那么就rollback回滚就会取消事物开启之后操作数据库的所有行为。

提供一个例子助于大家加深理解

public function insertdata(){
    $model = M();
    $model->startTrans();
    $data['name'] = 'winter';
//增加一条用户信息
    $si = $model->table(C('DB_PREFIX').'user')->add($data);
    if(!$si){
        $model->rollback();
        exit();
    }
    $car['brand'] = $si;
//增加一条用户id
    $c = $model->table(C('DB_PREFIX').'car')->add($car);
    if($si && $c){
        $model->commit();
    }else{
        $model->rollback();
    }
}
复制代码

 例子二：

//提现操作
    public function ajax_tx()
    {
         //判断是否登录
        if(session('uid') == NULL || session('uid') == "" || session('uid') == false) {
           echo "300";
            exit;
        }else{
            //接受提现提交来的数据
            
            $txnumber = intval(trim($_POST['txnumber']));

            $name = trim($_POST['name']);
            $alipay_number = trim($_POST['alipay_number']);
            $data = M("fanxian_new")->where("f_uid='".session('uid')."'")->find();
            if(empty($txnumber)){
                echo "301";exit;//提现金豆不能为空
            }else{
                if(empty($data) || intval($data['f_fan_fee'])==0){
                    echo "302";exit;//无可提现金豆
                }else{
                    if($data['f_fan_fee']<number_format($txnumber,2)){
                        echo "303";exit;//提现金豆数请勿大于持有金豆数
                    }else{
                        if(empty($alipay_number)){
                            echo "304";exit;//提现者支付宝账号不能为空
                        }
                        if(empty($name)){
                            echo "305";exit;//提现者真实姓名不能为空
                        }

                        $model=new ThinkModel();
                        $model->startTrans(); //开启事物
                        //操作提现记录
                        $fanxian_new_log = M("fanxian_new_log");
                        $fanxian_new_log->f_num_fee = number_format($txnumber,2);
                        $fanxian_new_log->f_lmId = session("uid");
                        $fanxian_new_log->f_create_time = time();
                        $fanxian_new_log->f_name = $name;
                        $fanxian_new_log->f_alipay = $alipay_number;
                        $fanxian_new_log->f_status = 1;//1表示提现记录 0表示返现记录
                        $jdtx = $fanxian_new_log->add();

                        $fanxian_new = M("fanxian_new");
                        $fanxian_new->f_uid    = $data['f_uid'];
                        $fanxian_new->f_fan_fee = $data['f_fan_fee']-number_format($txnumber,2);
                        $jd = $fanxian_new->save();
                        if(!empty($jdtx) && !empty($jd)){
                            //提交
                            $model->commit();
                            echo "200";exit;//提现成功
                        }else{
                            //回滚
                            $model->rollback();
                            echo "306";exit;//提现失败
                        }
                        
                    }
                }
            }
            
        }
    }