Reading about the Model/View/Controller style of framework is one thing, but actually implementing a system based on it is a different story. Arnold decided to embark on this journey and is taking you along for the ride in this new post to his blog.
Thanks to the rise of the PHP frameworks the Model View Controller pattern is becoming quite popular. To get a good idea how this works and what job PHP and Apache have, I've written a short example Hello World application which implements the MVC model without the use of a framework.
He starts with a sort of general overview of the framework - advantages, disadvantages, etc - before getting into the code. He's creating a simple "Hello world" kind of application to show how it's done and includes links to the code he's created for the controller, the action, views, the router (an Apache .htaccess file), and the PHP to handle all of the requests.