Adopting MVC, Model-View-Controller, to create a PHP programming framework always looks straight-forward. It is a successful design pattern (a set of general rules regulating the program design and implementation process to achieve a programming task). Again, the design of PHP language encourages MVC pattern — look at the documents at http://www.zend.com/php5/zend-engine2.php for further details. So, we adopt MVC – it is as simple as that.