PayPal 自适应链式付款 - 发件人的金额是主要收款人的金额，而不是总金额.如何解决

我正在开发一种服务，发送者支付一定金额，其中 95% 支付给一个接收者，5% 支付给另一个接收者。（例如，支付 100 美元，小学费用减少 95 美元，中学费用减少 5 美元。在此示例中，发件人看到 95 美元作为他的支付金额，而不是 100 美元，我不明白为什么。

这是在对应于另一个PayPal电子邮件地址数组的数组中设置金额的位置。

$receiverAmountArray = array(
        .5*$backing_amount,
        .95*$backing_amount
        );

第二个电子邮件地址设置为"主"电子邮件地址。最大数量的接收者必须是主要的。

$receiverPrimaryArray = array(
        'false',
        'true'
        );

CallPay（来自PayPal的图书馆）被称为：

$resArray = CallPay ($actionType, $cancelUrl, $returnUrl, $currencyCode, $receiverEmailArray,
                        $receiverAmountArray, $receiverPrimaryArray, $receiverInvoiceIdArray,
                        $feesPayer, $ipnNotificationUrl, $memo, $pin, $preapprovalKey,
                        $reverseAllParallelPaymentsOnError, $senderEmail, $trackingId
);

这是CallPay功能。对不起长度：

function CallPay( $actionType, $cancelUrl, $returnUrl, $currencyCode, $receiverEmailArray, $receiverAmountArray,
                        $receiverPrimaryArray, $receiverInvoiceIdArray, $feesPayer, $ipnNotificationUrl,
                        $memo, $pin, $preapprovalKey, $reverseAllParallelPaymentsOnError, $senderEmail, $trackingId )
    {
        /* Gather the information to make the Pay call.
            The variable nvpstr holds the name value pairs
        */
        // required fields
        $nvpstr = "actionType=" . urlencode($actionType) . "&currencyCode=" . urlencode($currencyCode);
        $nvpstr .= "&returnUrl=" . urlencode($returnUrl) . "&cancelUrl=" . urlencode($cancelUrl);
        if (0 != count($receiverAmountArray))
        {
            reset($receiverAmountArray);
            while (list($key, $value) = each($receiverAmountArray))
            {
                if ("" != $value)
                {
                    $nvpstr .= "&receiverList.receiver(" . $key . ").amount=" . urlencode($value);
                }
            }
        }
        if (0 != count($receiverEmailArray))
        {
            reset($receiverEmailArray);
            while (list($key, $value) = each($receiverEmailArray))
            {
                if ("" != $value)
                {
                    $nvpstr .= "&receiverList.receiver(" . $key . ").email=" . urlencode($value);
                }
            }
        }
        if (0 != count($receiverPrimaryArray))
        {
            reset($receiverPrimaryArray);
            while (list($key, $value) = each($receiverPrimaryArray))
            {
                if ("" != $value)
                {
                    $nvpstr = $nvpstr . "&receiverList.receiver(" . $key . ").primary=" . urlencode($value);
                }
            }
        }
        if (0 != count($receiverInvoiceIdArray))
        {
            reset($receiverInvoiceIdArray);
            while (list($key, $value) = each($receiverInvoiceIdArray))
            {
                if ("" != $value)
                {
                    $nvpstr = $nvpstr . "&receiverList.receiver(" . $key . ").invoiceId=" . urlencode($value);
                }
            }
        }
        // optional fields
        if ("" != $feesPayer)
        {
            $nvpstr .= "&feesPayer=" . urlencode($feesPayer);
        }
        if ("" != $ipnNotificationUrl)
        {
            $nvpstr .= "&ipnNotificationUrl=" . urlencode($ipnNotificationUrl);
        }
        if ("" != $memo)
        {
            $nvpstr .= "&memo=" . urlencode($memo);
        }
        if ("" != $pin)
        {
            $nvpstr .= "&pin=" . urlencode($pin);
        }
        if ("" != $preapprovalKey)
        {
            $nvpstr .= "&preapprovalKey=" . urlencode($preapprovalKey);
        }
        if ("" != $reverseAllParallelPaymentsOnError)
        {
            $nvpstr .= "&reverseAllParallelPaymentsOnError=" . urlencode($reverseAllParallelPaymentsOnError);
        }
        if ("" != $senderEmail)
        {
            $nvpstr .= "&senderEmail=" . urlencode($senderEmail);
        }
        if ("" != $trackingId)
        {
            $nvpstr .= "&trackingId=" . urlencode($trackingId);
        }
        /* Make the Pay call to PayPal */
        $resArray = hash_call("Pay", $nvpstr);
        /* Return the response array */
        return $resArray;
    }

这是通话前$nvpstr的值。PayPal是否有可能只是将付款金额作为主要付款？这在链式支付的背景下是没有意义的。

actionType=PAY¤cyCode=USD&returnUrl=https%3A%2F%2F.com%2Fview_profile.php&cancelUrl=https%3A%2F%2Fexamplefunding.com%2Fview_profile.php&receiverList.receiver(0).amount=95&receiverList.receiver(1).amount=5&receiverList.receiver(0).email=recip_1334204171_biz%40example.com&receiverList.receiver(1).email=example_1334201682_biz%40example.com&receiverList.receiver(0).primary=true&receiverList.receiver(1).primary=false&receiverList.receiver(0).invoiceId=5c4e2902cbe484a0db37284f0144994c&receiverList.receiver(1).invoiceId=6f3d8ce65d1a59b41f8822ba6129ea58&feesPayer=PRIMARYRECEIVER&memo=New+Draft+Lines+-+ExampleFunding.com&senderEmail=paypal_1334201496_per%40example.com&trackingId=mqN8SSgIq