PHPScenario is a free object-oriented split testing library for PHP. At its very simplest, the library provides one-line A/B testing, and is fairly extensible.

Features
- One line testing through smart defaults.
- Support for PDO and Zend Framework DBALs.
- XML-based result renderer (HTML via included XSL stylesheet).

Pingback: Tweets that mention A Free Split Testing Library for PHP: PHPScenario | Greepit -- Topsy.com