There have been reports of PHP having problems compiling with 2.0 on OS X - I'm not going to be getting into 2.0 discussions until Apple releases something official on their end (which hopefully will be with a 10.2 release, but if they don't, it won't surprise me).
Generically speaking, a LoadModule error means either a) you're missing a matching AddModule line or b) the module in question is broken. If you had problems building PHP, then there's a good chance that the module on line 37 is the PHP module. Commenting it (by placing a # in front of that line) should give you (at the very least) a different error message.
As for MySQL, there are instructions on how to install it on OS X in part five of this series.