Re: PHP 5.1 vm

On Wed, July 6, 2005 5:35 pm, Dan Rossi said: > > On 07/07/2005, at 10:26 AM, Richard Lynch wrote: >> "slow" switch > > You're a funny man Richard. So how is there overhead using callbacks if > you dont mind me asking ? I believe the callbacks imply a function stack, pushing/popping arguments, and some pointer-chasing arithmetic to figure out where the callback-ed function *IS* so it can JUMP to it... Maybe the compiler can pre-compute all that crap, in theory, since all the opcodes are constants, but I doubt it... Maybe I'm grossly misleading y'all. That compiler class I took *was* over a decade ago... :-^ Still got the book on my shelf. That don't mean I'm gonna read that sucker. Though, as I recall, it was the second best textbook I ever read. -- Like Music? http://l-i-e.com/artists.htm