UPHs (Ultimate Park Hoppers) were Disney's version of a length of stay pass. They were good for unlimited visits to all the theme parks, waterparks, PI, DQ and WWoS during your stay. They were sold as a part of vacation packages. The tickets expired at midnight of the day that you checked out. If that's the type of ticket that you're holding, it has expired and there are no more days left on it.
ETA: The exception would be if Disney issued the ticket as a comp due to a problem during your visit or you were there during the hurricanes. In that case, you can use it like a 1-day premium pass.