PhpStorm provides powerful built-in tools for debugging, testing, and profiling your applications.

PhpStorm has a variety of features that makes it easy to use. These include fully customizable shortcuts, a powerful search feature, and integration with version control. There are also a few learning resources available to help you get started with PhpStorm, including "Be Awesome In PHPStorm".

PHPDoc is a documentation generator. It allows the user to automatically generate documentation from specifically formatted comments.

The existing support of template engines and command-line tools is boosted with a more high-level feature: an MVC view for Symfony2 and Yii frameworks.
Plugins are also available, bringing various framework-specific features, such as code completion, navigation, type inference, and other IDE best practices for various PHP frameworks (Symfony, Drupal, Magento, Laravel, etc).