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                            # 事務處理
```
Db::transaction(function(){
	if(!Db::update('DELETE FROM news WHERE id=?',[1,3]))
	{
		throw new Exception;
	}
	if(!Db::delete('DELETE FROM news where id=?',[5]))
	{
		throw new Exception;
	}
});
```

> 注意： 在 transaction 閉包若拋出任何異常會導致事務自動回滾。

**有時候你可能需要自己開始一個事務**

``` 
Db:: beginTransaction()
```

**通過 rollback 的方法回滾事務**

```
DB::rollback();
```

**通過 commit 的方法提交事務**

```
DB::commit();

```


                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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