A Programmer's Introduction to PHP 4.0 addresses experienced programmers and Web developers--no matter what language they are familiar with. The book begins with a rapid introduction to PHP's syntax and basic functionality, allowing readers to easily gain a general understanding of the language. The book then moves onto advanced issues like PHP's role in database manipulation, sessions and user-interactivity. The book also examines how PHP can work with XML, Javascript and the Component Object Model (COM). Includes practical examples in addition to several projects that can be immediately incorporated into any Web site. It shows how to make the most of PHP's mighty capabilities and is invaluable to professional Web developers, regardless of their current level of PHP knowledge.