Symfony is arguably the most capable and popular PHP web application framework, enjoying widespread interest by PHP developers around the globe. This book serves as a complete guide to all aspects of the framework, covering installation, configuration, security, and advanced concepts such as scaffolding, routing, caching, and internationalization. It is authored by the Symfony project lead and documentation lead Fabien Potencier and François Zaninotto. Bundled with numerous tools for helping document, debug, and test your applications, and developed in a manner encouraging agile development principles, Symfony is sparking the imagination of thousands of developers around the globe. Accompanied by hundreds of practical code examples, this book will help readers quickly master rapid application development using this popular framework.