Description:
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There are four native php-functions for inspection of class/object methods and variables. Those are:

get_class_vars()
get_class_methods()
get_object_vars()
get_object_methods()

I think you could round out this inspection by having native-functions for getting class/object constants. Thus, I propose:

get_class_constants($class_name)
get_object_constants($object)

I understand that you can use reflection, but I still think it would be a nice addition to round out the functions. It would also lead to logical programming techniques.

Nick