Download Phalcon’s .dll file based on your environment – i’m using WampServer 32 bit(check with Task Manager if you don’t know your WampServer running on 32 bit or 64 bit).

Once downloaded, extract the php_phalcon.dll into C:wampbinphpphp[version]ext.

Add extension=php_phalcon.dll in 2 places:

1. C:wampbinapacheapache[version]binphp.ini
2. C:wampbinphpphp[version]php.ini

Now, restart your WampServer services and check phpinfo(), see if it’s loaded or not.

p/s: I used Phalcon’s .dll with no NTS, for PHP 5.5, and for 32 bit.