This book is for you if you fulfill the following conditions:
- You are already using Symfony2 and PHP
- You want to understand more about how it works under the hood
- You need to replicate some of the Symfony2 core features but ones that are tailored to your specific needs
- Your controllers and models are growing out of control
- You need a better way to structure and organize your application logic and code
This book is not for you if you are just getting started with Symfony2. It will confuse you more than it will help you. Keep it on your night stand for a while and come back to it later.