Thanks for your interest in this book. Just to be clear, as of October 2011, this book, the fourth edition, is the most current version
of my popular "PHP and MySQL for Dynamic Web Sites: Visual QuickPro Guide" book. This edition is
more current than "PHP 6 and MySQL 5 for Dynamic Web Sites" (to make a long story short, PHP6 was in beta when I wrote that edition, and then PHP6 failed to happen, with most of its changes ending up in PHP5.3 and 5.4).
The entire contents of this edition of the book were updated to correspond to version 5.3 of PHP and version 5.5 of MySQL. Approximately 50% of the material requires version 5 or later of PHP, mostly because the book only uses the Improved MySQL functions, added in PHP 5 and MySQL 4.1. Another 10% or so of the material requires version 5.3 of PHP, although in those instances, I do provide alternative code for earlier versions of the language.
To address another common question, I consider this book to be more advanced than my "PHP for the Web: Visual QuickStart Guide". Both books cover some of the same material, but this book is for those with some previous programming experience, or those that are good at learning independently. In short, this book goes at a quicker pace and covers a lot more material. If you want something that is more deliberate, but not as big in scope, I would recommend the "PHP for the Web: Visual QuickStart Guide" instead.
Finally, you can download all the scripts from my Web site. I also run a support forum where you can ask questions and get help. Secondary and supporting articles are also published on my Web site, and at the publisher's site. Thanks again for the interest in the book!
Larry Ullman is a writer, Web and software developer, trainer, instructor, speaker, and consultant. He has written 22 books and numerous articles. His books have sold over 300,000 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.