I'm new to PHP + PhpStorm + Selenium
But I have sound knowledge on Java + Selenium + TestNG.
Any body can advice to start automation with PHP + PhpStorm + Selenium?
I recommend you to use Behat/Mink/Selenium with PhpStorm.
Behat is a freamwork for testing automation written in PHP and it integrates perfectly with Phpstorm (natively).
Forget about PHPunit and Facebook php Selenium bindings...