Pop\Payment\Adapter\UsaEpay::buildPostString PHP Метод

    protected function buildPostString()
    {
        $post = $this->transaction;
        $post['UMcard'] = $this->filterCardNum($post['UMcard']);
        $post['UMexpir'] = $this->filterExpDate($post['UMexpir']);
        if (null !== $post['UMbillfname'] && null !== $post['UMbilllname']) {
            $post['UMname'] = $post['UMbillfname'] . ' ' . $post['UMbilllname'];
            unset($post['UMbillfname']);
            unset($post['UMbilllname']);
        }
        if (null !== $post['UMbillstreet']) {
            $post['UMstreet'] = $post['UMbillstreet'];
            unset($post['UMbillstreet']);
        }
        if (null !== $this->transaction['UMbillzip']) {
            $post['UMzip'] = $post['UMbillzip'];
            unset($post['UMbillzip']);
        }
        return http_build_query($post);
    }