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Subject: Why can constants only be scalars?
From: pollita@php.net ("Sara Golemon")

Long ago I was told constants could only be scalars, so I accepted it.
Certainly ZEND_FUNCTION(define) does the check to ensure it's a scalar, but
why?

For what I can tell a zend_constant is just a container for an ordinary zval
which is refcounted and all that fun stuff.  I don't see any obvious reason
for this restriction, and my tests with those restrictions removed seem safe
enough so far...  Can someone spell it out for me with little words?

-Sara