Is that for an essay analysing MVC systems or are you looking to use one for a specific project? If so, you might be better to give a bit more information as some come with existing "plugins" that might help speed your progress. You'll also find existing threads debating the virtues of cake, symfony etc.
If you want to use this model in your own php application better use HMVC. If you want to find framework with MVC pattern you can research, it's difficult to tell you something without any specifications