Christian Stocker has posted an adapter he's created to hook the Zend_Auth component of the Zend Framework into Twitter's authentication system.
From time to time I write some little scripts for my own needs or just to test out new stuff. And I realised, that I blog about it way too little. So here I start with my latest addition: Zend_Auth_Adapter_Twitter. [...] I came up with a Zend_Auth Adapter for Twitter. The integration was pretty easy, but the code is very basic and rough. Nevertheless, it does the job and alongside the Openid Adapter I can offer a federated login for many people already.