Many PHP developers are great specialists and know their way around PHP like the back of their hand. However, when a powerful framework like Symfony is built, it also includes software patterns and designs, which even the most experienced developers need to learn. This book is aimed to teach you exactly that. 

The security component is the most complex and least known component of the whole Symfony2 infrastructure. This is mostly because all security work is accomplished by very flexible third party bundles. And, it is exactly this flexibility, which also makes the flow and processes within the component difficult to follow. Access managers, token providers, trust deciders, firewall maps, authorization listeners – these are just a few of the rarely heard of and even less understood inner workings of the security component, which are actually vital and very useful parts of it.

In this book, we'll dive into the security components (yes, there are actually more than one!) of the Symfony2 framework, along with the supporting bridges, to show you how all of the components fit and work together. Furthermore, you will learn about ALL of the configuration options of the security.yml file and how these options affect the security processes within Symfony. You will also learn how to implement the security component in a non-framework app or in your own custom framework.

Besides these internals, we will also go through some recipes to solve common problems, in order to give you a solid basis to solve your own.

The Symfony Rainbow Series is a collection of books, which describe, in detail, the different components that make up the Symfony framework. Every book will concentrate on a single component or a set of smaller components. The books will describe the component's inner workings and also give you recipes to solve common problems quickly and efficiently.

These books are intended for PHP developers with any level of knowledge of Symfony, from beginner to expert. They are especially made for those developers, who work with or want to work with Symfony and want to also do their programming with Symfony as smartly and efficiently as possible. If you would like to learn exactly how the inner workings of Symfony function together as a framework or how to use the wide range of Symfony components in a standalone fashion, then these books are for you!