Enable Mcrypt on PHP Install

Question

I have PHP 5.2.14 installed on a Windows box (installed via .msi) using Apache 2.2.16. The install came with both ext/php_mcrypt.dll and libmcrypt.dll but when I uncommented extension=php_mcrypt.dll in php.ini and restarted Apache it doesn't enable. phpinfo() shows nothing for it. What am I missing?

UPDATE:

I looked at my error logs and it spit this out to me:
PHP Warning: PHP Startup: Unable to load dynamic library 'C:\PHP5\ext\php_mcrypt.dll' - The specified module could not be found.\r\n in Unknown on line 0

I read up a bit about this and I don't have any php dll's stored in the windows32/ folder, so I'm confused.

Answer 1

The other answers has the necessary steps about check the \ext\php_mcrypt.dll exists and enable the extension in php.ini. Beside this, you need to copy {Your-PHP-Root}\libmcrypt.dll to {Your-Apache-Root}\bin, then restart apache, the problem should be solved.