If I'm building a full fledged CMS it usually goes something like this

--Check if the site is active
--initiate session
--Check for IP ban
--Check for 'remember me' cookie and login
--Includes called module

I use a few main classes- a database class, a core class, a member class, a templating class, a globals class (post,get,etc), a purification class, a loader class.

All the classes are called at start up seeing as the bootstap makes use of all of them.

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"What everyone seems to forget is that while knowledge certainly is something - it's the implementation of knowledge that brings power" - Andres Galindo.