> If they're already namespaced, what prevents one to put it in a class
> and use good old PSR-compatible loading?
>
> Nothing, really... Just countering your specific premise.
> > Those function calls would only kick in if the function/constant wasn't
> > already defined, which will be the exception case, so perf isn't a
> > strong argument.
>
> Not according to the code I see in the patch. There I see 2 func calls
> (among other things) before the hash is even looked up.
>
> Well, the patch needs work obviously. I'm living in a magical world where
that's already been fixed. :)
-Sara