An PHP 5 library for easy openid authentication.
Features (of the consumer class):
* Easy to use. (you can code a functional client in less than ten lines of code)
* Uses curl if avaiable, php streams otherwise
* Supports both OpenID 1.1 and 2.0
* Supports Yadis discovery
* Supports only stateless/dumb protocol
* Works with PHP >= 5
* Generates no errors with error_reporting(E_ALL | E_STRICT)
The provider class is a little harder to use, but implements the full spec.
There are no reported vulnerabilities