Yes, course I have :) PHP is very picky about what extension version
is used.. there are four different versions of PHP: VC6 thread safe
and non thread safe, and VC9 thread safe and non thread safe. Only the
VC9 versions seem to have php_gmp.dll, and only a few WAMP packages
use VC9. And even then, it may not even work just copying the file
from the right distrib...
Ive started using EasyPHP as a dev platform, its very nice so far.
Uses the VC6 version of PHP, however.