yii2事务运用举例

$db = Yii::$app->db;
$transaction = $db->beginTransaction(); //开启事务

try {
　　// 更新member表
    $db->createCommand()->update(‘member‘,[
        ‘level‘ => $data[‘level‘]
    ],[‘id‘=>$data[‘user_id‘]])->execute();

　　// 更新storage表
    $db->createCommand()->update(‘storage‘,[
        ‘data‘ => $data[‘data‘],
    ],[‘member_id‘=>$data[‘user_id‘]])->execute();

    $transaction->commit(); // 两条sql均执行成功，则提交

} catch (Exception $e) {

    $transaction->rollBack(); // 事务执行失败，则回滚

}