Paranoia\Payment\Adapter\Gvp::formatAmount PHP Method

    protected function formatAmount($amount, $reverse = false)
    {
        if (!$reverse) {
            return number_format($amount, 2, '', '');
        } else {
            return (double) sprintf('%s.%s', substr($amount, 0, -2), substr($amount, -2));
        }
    }