If you know HTML, this guide will have you building interactive websites quickly. You'll learn how to create responsive, data-driven websites with PHP, MySQL, and JavaScript, regardless of whether you already know how to program. Discover how the powerful combination of PHP and MySQL provides an easy way to build modern websites complete with dynamic data and user interaction. You'll also learn how to add JavaScript to create rich Internet applications and websites. Learning PHP, MySQL, and JavaScript explains each technology separately, shows you how to combine them, and introduces valuable web programming concepts, including objects, XHTML, cookies, and session management. You'll practice what you've learned with review questions in each chapter, and find a sample social networking platform built with the elements introduced in this book. This book will help you: Understand PHP essentials and the basics of object-oriented programming Master MySQL, from database structure to complex queries Create web pages with PHP and MySQL by integrating forms and other HTML features Learn about JavaScript, from functions and event handling to accessing the Document Object Model Use libraries and packages, including the Smarty web template system, PEAR program repository, and the Yahoo! User Interface Library Make Ajax calls and turn your website into a highly dynamic environment Upload and manipulate files and images, validate user input, and secure your applications