Your PhD is your PhD. But the rest of your career will need publications if you want employment on a standard academic three-legged contract (teaching, research, administration). My supervisor suggested that I have a publication in process as it would be my "calling card." Nowadays I'm interviewing candidates for tenure-track jobs who have book contracts in hand.
So while your PhD is your PhD, and will stand alone for the degree, if you want an academic career you should be getting a move on to get at least a journal article out/in press/ accepted by the end of your PhD.