I currently run PHP 5.0.3 and I have tried to keep the same (or similar) ./configure string since the old PHP3 days to make sure that none of our old crud is broken.
I'm trying to figure out what --enable-track-vars does and I can't seem to find the information I need on php.net (maybe I am not looking hard enough).
What does it do? I feel embarassed asking such a question, as I should remember. Thanks!!