With these objectives, Zend Studio includes its own framework, known as Zend Framework, that makes it easier to create structures and generate code. Zend Studio is completely compatible with PHP 5.3, including its most advanced features. Furthermore, the application's own engine marks the code errors and fixes the most common ones without having to do anything. Improved team collaboration with shared project settings and configuration management (CVS, SVN).
All in all, Zend Studio is one of the most complete and versatile development environments that you can find, compatible with PHP 5.3 and with many help functions that improve productivity and simplify code development.