Welcome to Sams Teach Yourself PHP, MySQL, and Apache All in One, Third Edition! In this edition, we are finally able to use both PHP 5 and MySQL 5both long-awaited versions of the software. As such, all the code in this edition is based on the PHP 5 interface to MySQL 5. Additionally, two new chapters have been added, covering some of the new features in PHP and MySQL. Over the course of this book, you'll learn the concepts necessary for configuring and managing the Apache web server, the basics of programming in PHP, and the methods for using and administering the MySQL relational database system. The overall goal of the book is to provide you with the foundation you need to understand how seamlessly these technologies integrate with one another and to give you practical knowledge of how to integrate them.