Microweber\Utils\Format::human_filesize PHP Method

    public function human_filesize($bytes, $dec = 2)
    {
        $size = array('B', 'kB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB');
        $factor = floor((strlen($bytes) - 1) / 3);
        return sprintf("%.{$dec}f", $bytes / pow(1024, $factor)) . @$size[$factor];
    }