Weird Time format for a game(time in hundredths of a second!)

Is there a PHP code for displaying time within hundredths of a second? It's very important to me, because I have a forum game, and I use the second timer as a sort of di roll in the game. The problem is, some players are able to predict what their di roll lands on, so I figure I could make it harder/impossible for them if I use hundredths of a second instead of seconds. Unfortunately, I don't know how to do this, and it is no where on the site. My time is currently "H:i:s", where I use the "s" as the current di. I want to replace that with hundredths of a second. Is this possible? If not, please respond anyway, because it is important to me!