The third edition of PHP and MySQL web development has easy-to-understand language and a reasonable and clear structure. It adopts a step-by-step approach to introduce how to use PHP and MySQL for database-oriented Web application development: PHP language, MySQL server, e-commerce basics, security issues, and practical examples. This represents a reasonable learning curve for entry-level programmers looking to pursue PHP and MySQL web development. "PHP and MySQL Web Development" (3rd edition of the original book) introduces the latest version of PHP, 5.0. It details the history and present of PHP, as well as its features and functions as a process-oriented and object-oriented language. It also includes an introduction to the new features of the PHP 5 language, such as object-oriented improvements. This is basic introductory knowledge for readers who are not familiar with object-oriented languages.?