The book includes extensive discussion of the design issues, and how to overcome them in the framework. Each chapter of the book focuses on a particular requirement of the framework. The book will not present the total code for a framework, which requires many thousands of lines. But it does show the parts that raise critical design or implementation issues. For these, detailed explanation is given, leaving the less problematic parts to the code download itself. If you are a professional PHP developer who wants to know more about web oriented frameworks and content management systems, this book is for you. Whether you already use an in-house developed framework or are developing one, or if you are simply interested in the issues involved in this demanding area, you will find discussion ranging from design issues to detailed coding solutions in this book. You are expected to have experience working with PHP 5 object-oriented programming. Examples in the book will run on any recent version of PHP 5, including 5.3.