function dateDiff ( $d1, $d2 )
        {       # $d1 - $d2
#-k     datetime
#-      compares two timestamps and returns array with differences (year, month, day, hour, minute, second)
#-s     See also: dateRange formatTime secondsToInterval since time2secs date


//check higher timestamp and switch if neccessary
        if ($d1 < $d2)
                {
                $temp = $d2;
                $d2 = $d1;
                $d1 = $temp;
                }
        else
                {
                $temp = $d1; //temp can be used for day count if required
                }

        $d1 = date_parse(date("Y-m-d H:i:s",$d1));
        $d2 = date_parse(date("Y-m-d H:i:s",$d2));

//seconds
        if ($d1['second'] >= $d2['second'])
                {
                $diff['second'] = $d1['second'] - $d2['second'];
                }
        else
                {
                $d1['minute']--;
                $diff['second'] = 60-$d2['second']+$d1['second'];
                }

//minutes
        if ($d1['minute'] >= $d2['minute'])
                {
                $diff['minute'] = $d1['minute'] - $d2['minute'];
                }
        else
                {
                $d1['hour']--;
                $diff['minute'] = 60-$d2['minute']+$d1['minute'];
                }

//hours
        if ($d1['hour'] >= $d2['hour'])
                {
                $diff['hour'] = $d1['hour'] - $d2['hour'];
                }
        else
                {
                $d1['day']--;
                $diff['hour'] = 24-$d2['hour']+$d1['hour'];
                }

//days
        if ($d1['day'] >= $d2['day'])
                {
                $diff['day'] = $d1['day'] - $d2['day'];
                }
        else
                {
                $d1['month']--;
                $diff['day'] = date("t",$temp)-$d2['day']+$d1['day'];
                }

//months
        if ($d1['month'] >= $d2['month'])
                {
                $diff['month'] = $d1['month'] - $d2['month'];
                }
        else
                {
                $d1['year']--;
                $diff['month'] = 12-$d2['month']+$d1['month'];
                }

//years
        $diff['year'] = $d1['year'] - $d2['year'];
        return $diff;
        }

?>