I'm not sure how many of our regular Public Sector readers use PHP at work. Around here, we, obviously, prefer .Net :) If you are using PHP, however, you might be interested in the following announcement.
Basically, this is a technical partnership between Zend & Microsoft to improve the performance of PHP on Windows. We'd like for all developers to have the option to run on Windows, even those who don't choose to use .Net. Since most PHP developers develop their applications using Windows, it is important that Windows be a first class platform for running the applications as well.