public static function formatMemory($bytes, $precision = 3)
    {
        $absBytes = abs($bytes);
        $sign = ($bytes == $absBytes) ? 1 : -1;
        $suffix = ['B', 'kB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
        $total = count($suffix);

        for ($i = 0; $absBytes > 1024 && $i < $total; $i++) {
            $absBytes /= 1024;
        }

        return self::toPrecision($sign * $absBytes, $precision) . $suffix[$i];
    }