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                > 當我們配置好數據庫并連接成功后就可以對數據庫進行操作了,我們可以執行一次查詢進行測試: ```php //執行查詢 $info = Db('user')->select([ 'where' => ['name' => '張三'] ])->find(); //打印數據 dump($info); ``` > 我們操作數據庫的時候需要使用`Db`方法來進行操作,`Db`方法具有兩個參數:`Db($table = '', $config = null)`,第一個參數(必填)類型為string,傳遞一個需要操作的表名稱來進行數據庫操作,第二個參數(選填)為指定一個[數據庫配置](http://www.hmoore.net/fold/php300_2/425469)操作,參數類型為string,內容為數據庫配置的鍵名。 ![](https://box.kancloud.cn/99568df09a28ec341521f5cd3fa69588_315x273.png) ![](https://box.kancloud.cn/3be716da715de52fed5bb8eb2d2916a4_507x69.png)
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