Hey, I think I might have one of the original FORTRAN versions around here somewhere ... no, I'm thinking of ADVENT (a game I've been thinking about porting to PHP and making multi-user).
But yes, Zork was originally written in FORTRAN, a language designed for scientific processing, and later ported to C when that language was invented. Once you get into high-level software design (like writing a game) the precise choice of language starts to become secondary to the higher-level architectural stuff. That's not to say you'd write Quake III in PHP any more than you'd build the Eiffel Tower out of mud bricks, but in the end programming is programming whatever language it is you're using.
How's that for a subtle segue back on topic?