function addSlot($timetableID, $slot, $game, $numberOfSlots)
{
    $thisTimetable = Timetable::find_by_timetableid($timetableID);
    $contents = unserialize($thisTimetable->contents);
    $day = substr($slot, 0, 3);
    $time = intval(substr($slot, 4, 2));
    //counter for extra slots
    //Add to the array for how ever many slots there it
    for ($x = 1; $x <= intval($numberOfSlots); $x++) {
        $contents['timetable'][$day][$time] = $game;
        //Increment counters
        $time++;
    }
    $contents = serialize($contents);
    $thisTimetable->contents = $contents;
    $thisTimetable->save();
}