Not sure as the VMWare setup is at home and no connection to it from work.

However I've not run into any memory issues with PHP even on our production Windows Server forums.

However this is the first time I've used the php.net new installer. Normally I do a manual install / config. As it was the installer screwed it up as the .php documents for IIS can't use 8.3 file naming convention and it gave it one. Had to give it the full long path in quotes for it to work.