What's the easiest way to profile a PHP script?
I'd love tacking something on that shows me a dump of all function calls and how long they took but I'm also OK with putting something around specific functions.
I tried experimenting with the microtime function:
$then = microtime();
myFunc();
$now = microtime();
echo sprintf("Elapsed: %f", $now-$then);
but that sometimes gives me negative results. Plus it's a lot of trouble to sprinkle that all over my code.
You want xdebug I think. Install it on the server, turn it on, pump the output through kcachegrind (for linux) or wincachegrind (for windows) and it'll show you a few pretty charts that detail the exact timings, counts and memory usage (but you'll need another extension for that).
It rocks, seriously :D