Facebook's Selenium PHP Event Firing Web Driver.

Back in late 2013, I wrote the Event Firing webdriver for Facebook's implementation of the Selenium webdriver in PHP.

The reasoning behind the event firing webdriver is that actions can be called at special events (no shit huh). The classes implement the official Java methods fully, and as such, the cross implementation specifics can be followed.

As an example, below is how to capture a screenshot when an error occurs in the webdriver.