Zend Studio
Zend Studio is an Integrated Development Environment (IDE) used to create and develop applications in the PHP programming language. With split editing, intuitive code assist, code completion, real-time validation, and analysis, Zend Studio’s sophisticated code editor helps the developer cut down on development time.
To find hidden bugs and performance problems, Zend Studio includes sophisticated debugging tools and allows you to pick between ZendDebugger and Xdebug.