On DZone.com today Giorgio Sironi has a quick tutorial showing you how to set up and use the PHPUnit_Selenium component in the latest releases of the popular testing software.

With the 1.2 release, PHPUnit_Selenium supports (basically) for the first time the Selenium 2 WebDriver API. While PHPUnit_Selenium already worked with Selenium 2, it did so only by using the Selenium 1 emulation included in the jar; now it provides an object-oriented API right natively supported in a base PHPUnit test case, shipped in PHPUnit's PEAR channel.

He includes the steps you'll need to pull it from the PEAR channel and how to set up a test case based on the PHPUnit_Extensions_Selenium2TestCase object. He gives a few examples of how to select various components on the page (via CSS selectors and XPath), assert that the right information is there and interact with forms.