Ade Slade has written up a quick new post to his blog today showing how you can use the lightweight Silex framework to link your login with Twitter and validate users from their API.

For those not acquainted with Silex: Silex is a PHP microframework for PHP 5.3 A microframework provides the guts for building simple single-file apps. It's awesome. For the example, I've setup a virtual host of example.local on my development machine.

He includes the contents of the .htaccess you'll need to get the rewrite to work for Silex, a link to the OAuth extension you'll need to install for PHP and the code to make the login and auth routes. You'll need to create a Twitter application for your site to get the OAuth secret key to make the authentication work. You can see the complete code here.