function _lookupRemainingWorkingTimeString($a_obj_id)
 {
     global $ilDB, $lng;
     $q = "SELECT MIN(deadline) mtime FROM rep_robj_xeph_assign WHERE eph_id = " . $ilDB->quote($a_obj_id, "integer") . " AND deadline > " . $ilDB->quote(time(), "integer");
     $set = $ilDB->query($q);
     $rec = $ilDB->fetchAssoc($set);
     if ($rec["mtime"] > 0) {
         $time_str = ilObjEphorus::period2String(new ilDateTime($rec["mtime"], IL_CAL_UNIX));
     }
     return $time_str;
 }
 /**
  * Get time string for deadline
  */
 function getTimeString($a_deadline)
 {
     global $lng;
     if ($a_deadline - time() <= 0) {
         $time_str = $lng->txt("rep_robj_xeph_time_over_short");
     } else {
         $time_str = ilObjEphorus::period2String(new ilDateTime($a_deadline, IL_CAL_UNIX));
     }
     return $time_str;
 }