I wrote a Symfony2 bundle for handling some basic operations against the Zendesk REST API using service-oriented architecture and an entity/repository data model. So if your Symfony2 application needs a Zendesk integration, this might be the kind of thing you're looking for.

You can check ZendeskBundle out on GitHub. A special thanks goes out to the good folks at MalwareBytes for always giving me opportunities to expand my horizons in my spare time!