On SitePoint's PHP blog they've posted the last part of their series about building a web application with the Symfony2 framework. In this latest part they cover a few more complex things you can do to add features to your application.
In Part 1 and Part 2 of this series, I have covered the basics of using Symfony 2 to develop a functioning web site. In this part of the tutorial, I will cover some more advanced techniques and finish the project with pagination, image watermarks and NativeQuery.
He uses the default image library to add the watermarks (GD) and adds in a new route to view the cover of the book with the watermark applied. He shows how to add simple pagination into the book listing page (via controller attributes) and the use of the NativeQuery Doctrine provides to do more complex queries.