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                MySQL連接 ``` <?php $dbhost = 'localhost'; // mysql服務器主機地址 $dbuser = 'root'; // mysql用戶名 $dbpass = '123456'; // mysql用戶名密碼 $conn = mysqli_connect($dbhost, $dbuser, $dbpass); if(! $conn ) { die('Could not connect: ' . mysqli_error()); } echo '數據庫連接成功!'; mysqli_close($conn); ``` 訪問指定數據庫: ``` <?php $dbhost = '127.0.0.1'; // mysql服務器主機地址 $dbuser = 'root'; // mysql用戶名 $dbpass = '123456'; // mysql用戶名密碼 $db = 'test'; $conn = mysqli_connect($dbhost, $dbuser, $dbpass); if(! $conn ) { die('連接MySQL失敗: ' . mysqli_error($conn)); } echo '連接MySQL成功'; $db = mysqli_select_db($conn, $db); if(!$db) { die('<br/>訪問數據庫失敗: ' . mysqli_error($conn)); } mysqli_close($conn); echo '<br/>訪問數據庫成功'; ```
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