title: How to load php_pdo_sqlsrv_54.dll?
body: <p>I'm using WAMP 2.2 (PHP 5.4.3) on Windows 7 64bit and I like to use PHP to connect to MS SQL Server 2005 Express Edition.</p>
  
  <p>I downloaded <a href="http://www.microsoft.com/en-us/download/details.aspx?id=20098" rel="nofollow noreferrer">Microsoft Drivers 3.0 for PHP for SQL Server</a> and unzip the file php_pdo_sqlsrv_54_ts.dll to the php's extension directory.</p>
  
  <p>I appended php.ini with additional "extension=php_pdo_sqlsrv_54_ts.dll".</p>
  
  <p>After restarting WAMP, I got an error message dialog.
  <img src="https://i.stack.imgur.com/UKMF6.png" alt="Error Dialog"></p>
  
  <p>How to fix it?</p>
  
  <p>One more thing, why php keep putting pdo_mssql on it's php.ini, is it available anyway?</p>
  
  <p>Thanks.</p>