Here are some excellent resources for working with sfDoctrineGuardPlugin:

Plugin page on symfony (README is possibly out of date)
http://www.symfony-project.org/plugins/sfDoctrineGuardPlugin

I’m still very new to Symfony 1.2 and its form framework. Reading through documentation, discussion forums and blog posts, I couldn’t find a tutorial which had everything I needed in an image upload. Having finished an image upload for the first time, I decided to write such a tutorial.

This tutorial requires Symfony 1.2, the Doctrine ORM plugin and the PHP GD library. You should already have all of these elements installed, and be familiar with them.