Zend Studio is the only Integrated Development Environment designed for professional developers that encompasses all the development components necessary for the full PHP application lifecycle. Through a comprehensive set of editing, debugging, analysis, optimization, database tools and testing Zend Studio 7 speeds development cycles and simplifies complex projects.

Features:
* PHP 5.3 Support
-Code Assist and syntax highlighting for PHP 5.3
-Namespace outline
-Bundled PHP executables and debugging capabilities
* Zend Framework Integration
-Easy Creation of Zend Framework Elements
-Customized Zend Framework Project Layout
-Updated Zend Framework Example Project
-Code generation through Zend_Tool integration
* Enhanced Source Code Editing
-Mark Occurrences of Language Elements, Exit Paths and Requires
-Override Indicators for quick navigation between methods
-Type Hierarchy view for structured class hierarchy
-Open Type / Method with Camel-Case Match
-Code Assist Grouping
-In-Place Refactoring for fast element renaming
-Develop modular applications with Build and Include Path features
-Turn a block of code into a function or a variable with Extract Variable / Method
-Semantic Analysis and Auto Fix

And more …

Home Page - http://www.zend.com/en/products/studio/