Paypal 自适应链式支付 - 发件人的金额是主要收款人的金额，而不是总金额。怎么修？

Posted 2023-02-22

【中文标题】Paypal 自适应链式支付 - 发件人的金额是主要收款人的金额，而不是总金额。怎么修？

【英文标题】：Paypal Adaptive Chained Payments - Sender's amount is primary receiver's amount not the total amount. How to fix?

【发布时间】：2012-04-25 03:45:06

【问题描述】：

我正在开发一项服务，其中发送方支付一定金额，其中 95% 支付给一个接收方，5% 支付给另一个接收方。 （例如，支付 100 美元，初级费用减少 95 美元，二级费用减少 5 美元。）在此示例中，发件人将 95 美元视为他要支付的金额，而不是 100 美元，我不明白为什么。

这里将金额设置在一个数组中，该数组对应于另一个 Paypal 电子邮件地址数组。

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

第二个电子邮件地址设置为主。最大金额的接收者必须是主要的。

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

CallPay（来自 Paypal 的库）被调用：

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

这里是 CallPay 功能。抱歉，篇幅较长：

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;
    

这是调用前 $nvpstr 的值。 Paypal 是否可能只是将付款金额作为主要付款？这在链式支付的情况下没有意义。

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

【参考方案1】：

根据Paypal's Adaptive Payments Documentation：

在链式支付中，发送方向主要接收方支付一定金额， 主要收款人向次要收款人付款。发件人 只知道主接收器，不知道辅助接收器。

因此，这是按预期工作的。为了向二级收款人支付总金额的 5%，我必须更改：

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

到这里：

$receiverAmountArray = array(
        .05*$backing_amount,
        $backing_amount
        );

认为总金额是数组中各个接收者金额的总和是我的错误。

【参考方案2】：

示例：total_amount = 100;

如果我们设置receiverList.receiver(0).primary=true 那么receiverList.receiver(0).amount = total_amount;

和receiverList.receiver(1).amount=95%*total_amount