I was thinking the same thing. I get the feeling the PHP is probably compiled into some C or C++ format. The speed increase would work wonders for the producti

I was thinking the same thing. I get the feeling the PHP is probably compiled into some C or C++ format. The speed increase would work wonders for the production server, and if you didn't change HPHP too much from regular PHP, you could still run interpreted for development. For scaling, I wouldn't be surprised if we started seeing hybrid models like this in the future.