Sharpen your PHP skills with the fully revised and updated, PHP 5 Advanced for the World Wide Visual QuickPro Guide ! Filled with fourteen chapters of step-by-step content and written by best-selling author and PHP programmer, Larry Ullman , this guide teaches specific topics in direct, focused segments, shows how PHP is used in real-world applications, features popular and most-asked-about scripts, and details those technologies that will be more important in the future. You'll learn about object-oriented programming, PHP interactions with a server, XML, RSS, Networking with PHP, image and PDF generation, and more.
Larry Ullman is a writer, Web and software developer, trainer, instructor, speaker, and consultant. He has written 23 books and numerous articles. His books have sold over 350,000 copies world wide in more than 20 languages. As his readers, students, and co-workers can attest, Larry’s strength is in Translating Geek into English: converting the technical and arcane into something comprehensible and useful.
A good review of security and good programming rules, as well as examples of some more advanced techniques, but I don't think I really gained a huge amount of knowledge.