JetBrains PhpStorm 2.1 (Win/MacOSX/Linux)

PhpStorm is a lightweight and smart PHP IDE focused on developer productivity that deeply understands your code, provides smart code completion, quick navigation and on-the-fly error checking. It is always ready to help you shape your code, run unit-tests or provide visual debugging.
Note: PhpStorm includes all the functionality of WebStorm (HTML/CSS Editor, javascript Editor) and adds full-fledged support for PHP.

Intelligent PHP Editor
* PHP code completion
* PHP refactoring
* Smarty and PHPDoc support
* Quick navigation
* Language mixing (JS/SQL/XML etc.)

Advanced javascript Editor
* DOM-based/browser-specific completion
* Code navigation and usages search
* javascript refactoring
* javascript debugger

HTML/CSS Editor
* DOM-based code completion
* Validation and quick-fixes
* Zen coding
* Show applied styles
* Extract embedded styles

Lightweight IDE
* Easy installation
* Lightning-fast startup
* Runs on Windows, Mac OS X, Linux
* Easy project configuration — open code from anywhere and start working

Smart Environment
* Visual PHPUnit test-runner
* Support for SVN, CVS, Git, Perforce. Visual merging
* FTP and remote files synchronization
* Local changes history

Visual Debugging
* Code stepping and evaluation with built-in graphical debugger
* Breakpoints in PHP, JS, HTML
* Inspect variables, watches
* Batch code analysis

System requirements:
* Microsoft Windows 7 (incl.64-bit)/Vista/2003/XP/2000
* Intel Pentium III/800 MHz or higher (or compatible)
* 512 MB RAM minimum
* 2 GB RAM recommended
* 1024x768 minimum screen resolution

Home Page - http://www.jetbrains.com/