php.net seems like a good spot to start🙂 You need to use the Ming library in this case (php_ming.dll). If you downloaded the Win32 installer, you'll need to go back and grab the zip file package instead as the installer has no external extensions packaged with it.
Once you've got the php_ming.dll file, specified the extension_dir (folder where php_ming.dll lives on you hard drive) in php.ini, uncommented or added "extension=php_ming.dll" in php.ini, and restarted the webserver...... you're in business. The Ming functions are detailed in the manual at: http://download.php.net/manual/en/ref.ming.php
HTH.
-geoff