Like VAN says, that would ofcourse be a very dumb thing to do.
I don't really understand why you think there is a difference between calling a 'normal' function and an OO function.
What do you do to call a normal function?
You check for some parameter and start the function.
So what should you do to start an OO function?
Yup, check for a parameter and start the function.
The only diff is that in OO, the function is a method of an object, which means you must create the object before you can call the method.
And an OO script without an object doesn't make any sense, so where's the problem?
A forum, a FAQ, email notification, what else do you need?