Here are a few of the web sites I am involved with at the moment using a variety of different technologies, ranging for ASP/SQL Server to PHP MySQL.
Adam Leach BBC TV Listings for the next week AddersAds. Look4aProperty - Property Portal. Steer2Freedom Driving Lessons L W Gates - Electric gates, kits and gate automation On Telly TV Listings - powered by BBC Backstage Property for Sale and Rent in London Find Stuff Cheaper
Zend have created a great framework for PHP that allows you to concentrate on making your web applications the best in the market. I'm still learning the framework, but some of the useful libraries are Zend DB and Zend Auth
A great tutorial has been written by Rob Allen and this gives a good foundation for building your first few Zend Framework apps. I'm currently using the Beta Zend Studio Neon that has complete support built in. It is basically a customised Eclipse PDT interface with a number of extras and tweaks adding in by Zend to make it a complete package.