There are many reasons to use PHP on a Windows system, but the most common is that you want to develop web applications on your Windows desktop. PHP development on Windows is just as doable these days as it is on a Unix platform. PHP plays very well on Windows, and PHP’s supporting casts of server and add-on tools are all just as Windows-friendly. Having a PHP system working on any of its supported platforms is simply a matter of preference. Setting up and developing with a PHP environment on Windows is very easy to do, as PHP is extremely cross-platform friendly, and installation and configuration are becoming easier all the time. Just the relatively recent appearance on the market of Zend Server CE (Community Edition) for multiple platforms has been a wonderful help in establishing a common installation platform on all the major operating systems.