Mine

function difference($start, $quanity = 2){	$seconds = TIMENOW - strtotime($start);	$time['week'] = floor($seconds / 604800);	$seconds = $seconds % 604800;	$time['day'] = floor($seconds / 86400);	$seconds = $seconds % 86400;	$time['hour'] = floor($seconds  / 3600);	$seconds = $seconds % 3600;	$time['minute'] = floor($seconds / 60);	$time['second'] = $seconds % 60;	$i = 1;	foreach($time as $index => $value)    { 		if ($i > $quanity) break;		elseif ($value != 0)        {			$index .= ($value > 1) ? 's' : NULL;			$str .= (isset($str)) ? ", $value $index" : "$value $index";			$i++;		}	}	return $str;}