Torrent::format PHP Method

    public static function format($size, $precision = 2)
    {
        $units = array('octets', 'Ko', 'Mo', 'Go', 'To');
        while (($next = next($units)) && $size > 1024) {
            $size /= 1024;
        }
        return round($size, $precision) . ' ' . ($next ? prev($units) : end($units));
    }