I just found PHP 5.3.1 for WampServer (still built with VC6!). With this, Apache doesn't crash (at least not with the front page nor phpinfo()), but I can't get either of
php_xdebug-2.1.0beta1-5.3-vc9.dll
php_xdebug-2.1.0beta1-5.3-vc9-x86_64.dll
to load at all (on Win7RC 64-bit), i.e. it doesn't appear on phpinfo()

You had 5.3 VC6 binaries in Xdebug 2.0.5 -- why did you stop including them?

Hi Derick,
Thanks for this great piece of software.
I agree with Salvis regarding the need for the VC6 but I know this requires time from your side. So we can only beg you for the inclusion.
There are still a lot of php-apache-mysql suites that ship with php compiled with VC6. I use WAMP and XAMPP and both of them still ship with VC6.
I have downloaded PHP VC9 and replaced it in WAMP. PHP VC9 works great then, but when I enable xdebug, it brings havoc. The only thing I see are apache crashes.
Don't know if anything else in apache shoud be compiled with VC9.
Anyway, thanks away for your effort.
Chema

They will appear when PHP 5.3 with VC6 compiles for me again, please follow the mailinglist for updates.