Building Responsive Web Applications with AJAX and PHP is the most practical and efficient resource a reader can get to enter the exciting world of AJAX. This book will teach you how to create faster, lighter, better web applications by using the AJAX ingredients technologies to their full potential. Assuming a basic knowledge of PHP, XML, JavaScript and MySQL, this book will help you understand how the heart of AJAX beats and how the constituent technologies work together. After teaching the foundations, the book will walk you through eight real-world case studies covering tasks you’ll be likely to need for your own applications: - AJAX enabled form-validation page - Online chat room - Customized type-ahead text entry solution, that helps users find the help page for the PHP functions - A simple cards game that supports multiple simultaneous sessions - Whiteboard where online users can draw online - Database-enabled, editable and customizable data grid - RSS aggregator application - Use the script.aculo.us JavaScript toolkit to build a drag&drop enabled sortable list The appendixes guide you through installing your working environment, using powerful tools that enable debugging, improving, and profiling your code, working with XSLT and XPath, and working with existing AJAX frameworks.