title: PHP PDO extension not working on IIS
body: <p>I have a script which uses __autoload() to load classes (stupid, I know, this is old code I used to use for fun / testing), and it seems to be trying to autoload PDO. This leads me to believe that it's not finding the PDO class it should be. I have checked php.ini and php_pdo.dll is enabled, along with php_pdo_mysql.dll, etc. The .dll files exist in "ext/" and I've restarted the web server numerous times.</p>
  
  <p>I don't have much experience with IIS, but I've never had this issue on Linux, so I'm not sure what the issue is.</p>
  
  <p>Any help would be greatly appreciated.</p>
  
  <p><strong>EDIT</strong>: PDO is not in <code>phpinfo()</code>. I know it's not loaded correctly, I'm trying to figure out why. Here is my php.ini file: <a href="http://pastebin.com/cjrmmPb3">php.ini on Pasebin</a></p>
  
  <p>C:\Program Files (x86)\PHP\ext is the extension directory, and listed as such in php.ini and <code>phpinfo()</code>. </p>