Actually, I just updated Rasmus' demo program to use assocative arrays instead of objects.
In PHP 5.4.x, the associative array version uses more memory than the object oriented version. That's because PHP 5.4.x is using a flat array for predeclared properties, as was mentioned earlier by Gustavo. Associative arrays: 524288 bytes Objects: 262144 bytes The object-oriented version is also faster, by about 20%. Interestingly these results don't change much if I make the property names/keys much shorter. Probably there's a minimum allocation of 64 bytes for these or something. It would appear there is no longer a penalty simply for using many objects vs. many associative arrays in PHP 5.4. The opposite, in fact. I'm sure arrays didn't get slower, but objects now take advantage of some optimizations that become possible when properties are predeclared. However this doesn't mean that calling lots of setters will necessarily be as fast as direct property access... oh what the heck, let's test that too: Calling dead-simple setters for the four properties rather than setting them directly slows down the OOP version to the point where it runs at just about the same speed as the associative array version. That's not terrible. Direct property access is still fastest (after all that's what the setters do after they pay the overhead of the function call). On Mon, May 21, 2012 at 9:23 PM, Richard Lynch <c...@l-i-e.com> wrote: > No offense intended, but if you've got so many OOP objects flying > around that they are sucking down that much memory... > > You probably need to refactor your code and just "don't do that" > > Just my opinion. > > -- > brain cancer update: > http://richardlynch.blogspot.com/search/label/brain%20tumor > Donate: > https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=FS9NLTNEEKWBE > > > > -- > PHP Internals - PHP Runtime Development Mailing List > To unsubscribe, visit: http://www.php.net/unsub.php > -- Tom Boutell P'unk Avenue 215 755 1330 punkave.com window.punkave.com -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: http://www.php.net/unsub.php
