public static function printTime($counter = "def")
    {
        $counter = self::filterCounterName($counter);
        if ($counter === "") throw new Exception('Not valid counter name');
 
        if (!isset(self::$durations[$counter])) 
        {
            //print transitional time:
            $currentTime = microtime();
            $aA = explode(' ',self::$startTimes[$counter].' '.$currentTime); //seperate values and put parts in array
 
            $transitionalTime = (($aA[2]+$aA[3])-($aA[0]+$aA[1])) + 
                                (isset(self::$durations[$counter]) ? self::$durations[$counter] : 0);
 
          if($counter != "def")
            return sprintf('Transitional time for Counter '.$counter.': %03.4f Seconds', $transitionalTime);
          else
            return sprintf('Transitional time: %03.4f Seconds', $transitionalTime);            
        }
 
        if($counter != "def")
          return sprintf('Counter '.$counter.': %03.4f Seconds', self::$durations[$counter]);
        else
          return sprintf('%03.4f Seconds', self::$durations[$counter]);        
    }