Gravy is a cool Gravatar package for FuelPHP. It's based of the CodeIgniter helper and the Gravtastic gem for Ruby. You can add gravatars to your project with just one line of code.
to install this package simply type this:
php oil package install gravy
There are two ways to retrieve a gravatar.
By email:
Gravy::from_email('');
By hash:
Gravy::from_hash('');