FileUpload\FileUpload::getConfigBytes PHP Method

    protected function getConfigBytes($val)
    {
        $val = trim($val);
        $last = strtolower($val[strlen($val) - 1]);
        switch ($last) {
            case 'g':
                $val *= 1024;
            case 'm':
                $val *= 1024;
            case 'k':
                $val *= 1024;
        }
        return $this->fixIntegerOverflow($val);
    }