致命错误：找不到驱动程序

我尝试使用PHP PDO连接到SQL Server，但它一直给我错误。而且，我已经在下面的目录xampp-> PHP致命错误：找不到驱动程序

Fatal error: Uncaught exception 'PDOException' with message 'could not find driver' in C:\xampp\htdocs\config.php:35 Stack trace: #0 C:\xampp\htdocs\config.php(35): PDO->__construct('sqlsrv:server=C...', 'username...', 'pass') #1 {main} thrown in C:\xampp\htdocs\config.php on line 35

这里是我的PHP代码文件php_pdo_sqlsrv_53nts.dll：

<?php 
     $serverName ="serverName"; 
      $dbName="databaseName"; 
      $username="userName"; 
      $password="passWrord"; 

      $connection = new PDO("sqlsrv:server=$serverName ; Database=$dbName", "$username", "$password"); 

     if($connection) 
{ 
    echo "Connection established.\n"; 
    } 
else 
    { 
    echo "Connection could not be established.\n"; 
    die(print_r(sqlsrv_errors(), true)); 
    } 



?>

有什么问题我在做什么？赞赏。

来源

2013-07-23 user2501165