[UPHPU] analyzing load time

[Daniel C.]

A friend of mine has a site (written in PHP with lots and LOTS of
Ajax) that's loading slowly.  What are some good ways to find out why
it's loading slowly and then speed it up?  I suspect it's mostly
images (he's got several images that are being scaled by the browser)
but I'd like to check for less-obvious problems with a code profiler,
if there are any decent ones available for PHP.

Thanks,
Dan