title: Add sqlsrv extension to php in xampp
body: <p>I want to connect to SQL Server with php. From my search, I gather that, if your platform is Windows you should use the sqlsrv extension and when it is Linux you should use dblib extension.</p>
  
  <p>I want to use both of them, but in Windows I can't install sqlsrv. </p>
  
  <p>I download php_sqlsrv_53_nts_vc9.dll and put it in the ext directory in xampp and add following line to php.ini: </p>
  
  <pre><code>extension=php_sqlsrv_53_nts_vc9.dll
  </code></pre>
  
  <p>After that, I restart apache, but in phpinfo(), I can't access sqlsrv and I get the error below: </p>
  
  <pre><code>Call to undefined function sqlsrv_connect() 
  </code></pre>
  
  <p>How can I solve it?</p>
  
  <p>My xampp version : 3.2.1
  My php version : 5.5.3</p>