PHP 将秒数转换成时分秒

public function changeTimeType($seconds) { 
        if ($seconds > 3600) { 
            $hours = intval($seconds / 3600); 
            $minutes = $seconds % 3600; 
            $time = $hours . ":" . gmstrftime('%M:%S', $minutes); 
        } else { 
            $time = gmstrftime('%H:%M:%S', $seconds); 
        } 
        return $time; 
    }

    public function changeTimeT($seconds) {
        $hours = floor($seconds / 3600);
        $minutes = floor(($seconds - ($hours * 3600)) / 60);
        $seconds = $seconds - ($hours * 3600) - ($minutes * 60);
        return str_pad($hours, 2, '0', STR_PAD_LEFT).':'.str_pad($minutes, 2, '0', STR_PAD_LEFT).':'.str_pad($seconds, 2, '0', STR_PAD_LEFT);
    }