In this new post to the Zend Developer Zone, they point out a workflow diagram Polley Wong has come up with showing how the Zend Framework's dispatch system works (request handling).
I've been researching Zend Framework lately and was curious about what's actually happening behind the scene of the whole dispatch process. Inspired by Thorsten Ruf's (zenddispatch_en.pdf) clear and beautifully presented workflow, I decided to go a step deeper and crawl Zend Framework's code. I came up with my own version of the flexible yet complicated workflow.
You can check out this new PDF here. It diagrams out an overall view of the request handling, a look at what happens inside the front controller including components like the Controller Dispatcher, Action Controller, Action Helper Broker and Response Object.