As a PHP 4 user, chances are that an upgrade to PHP 5 is in your future. Upgrading to PHP 5 is for the existing PHP developer who either already owns a book on PHP 4 or has learned from web sites and mailing lists. Written by the coauthor of PHP Cookbook, this is the book an experienced PHP programmer needs to get started with the latent release. Upgrading to PHP 5 zeros in on PHP 5's new features and covers these features definitively.
You'll find a concise appraisal of the differences between PHP 4 and PHP 5, a detailed look at what's new in this latent version, and how these changes affect your work. Then, because this is written for veteran PHP programmers, you can go directly to more advanced features and gain valuable bands-on experience using the short code samples that are included throughout the book. The final chapter is a complete example program that pulls together all the previously introduced material into a single application.
Upgrading to PHP 5 won't make you wade through information you've covered before; author Adam Trachtenberg takes you straight into the heart of all that's new in PHP 5. By the time you've finished this book, you'll know PHP 5 in practice as well as in theory.