PHP is often considered to be the cornerstone for buildingflexible and feature-rich web applications. Because of its relatively simple initial learning curve, newer programmers can easily create applications in PHP from the ground up. As these applications scale, however, the maintenance can seem daunting. Luckily, the mature programming community has something to offer: Design Patterns. These repeatable solutions for common problems have been applied for years to other programming languages. This book aims to bridge the gap between the PHP and the older programming language by applying those tried and tested Design Patterns to native PHP applications.