Php Paypal API：购物车项目金额的总和与订单金额不匹配

我正在使用paypal express checkout API，在设置数量方面遇到问题。以下是我的URI参数：

$params = array(
   'METHOD' => 'SetExpressCheckout',
   'PAYMENTREQUEST_0_SHIPPINGAMT' => '0',
   'PAYMENTREQUEST_0_TAXAMT' => '0',
   'PAYMENTREQUEST_0_HANDLINGAMT' => '0',
   'PAYMENTREQUEST_0_AMT' => "50.00",
   'RETURNURL' => $this->_returnUri,
   'CANCELURL' => $this->_cancelUri,
   'HDRIMG' => $this->_logoUri,
   'PAYMENTREQUEST_0_CURRENCYCODE' => 'GBP',
   'L_PAYMENTREQUEST_0_DESC0' => 'Product description',
   'L_PAYMENTREQUEST_0_NAME0' => 'Product name',
   'L_PAYMENTREQUEST_0_AMT0' => "50.00",
   'L_PAYMENTREQUEST_0_QTY0' => "2"
);

如果L_PAYMENTREQUEST_0_QTY0设置为1，则流程正常。但是，将其更改为2并将“PAYMENTREQUEST\u 0\u ITEMAMT”=>“100.00”添加到数组中会出现以下错误：

TIMESTAMP: 2012-04-17T12:11:16Z
CORRELATIONID: da43f6c91254
ACK: Failure
VERSION: 88.0
BUILD: 2808426
L_ERRORCODE0: 10413
L_SHORTMESSAGE0: Transaction refused because of an invalid argument. See additional error messages for details.
L_LONGMESSAGE0: The totals of the cart item amounts do not match order amounts.
L_SEVERITYCODE0: Error

---

我已经连续几个小时试图修复它，但已经放弃了。有人能突出显示我需要做什么才能让它工作吗？

您缺少一个

项目amt

。另请参见我的答案，其中包含一个具有多个数量的工作示例

&L_PAYMENTREQUEST_0_NAME0=10% Decaf Kona Blend Coffee  
&L_PAYMENTREQUEST_0_NUMBER0=623083  
&L_PAYMENTREQUEST_0_DESC0=Size: 8.8-oz 
&L_PAYMENTREQUEST_0_AMT0=9.95  
&L_PAYMENTREQUEST_0_QTY0=2  
&L_PAYMENTREQUEST_0_NAME1=Coffee Filter bags  
&L_PAYMENTREQUEST_0_NUMBER1=623084  
&L_PAYMENTREQUEST_0_DESC1=Size: Two 24-piece boxes  
&L_PAYMENTREQUEST_0_AMT1=39.70  
&L_PAYMENTREQUEST_0_QTY1=2  
&PAYMENTREQUEST_0_ITEMAMT=99.30  
&PAYMENTREQUEST_0_TAXAMT=2.58  
&PAYMENTREQUEST_0_SHIPPINGAMT=3.00  
&PAYMENTREQUEST_0_HANDLINGAMT=2.99  
&PAYMENTREQUEST_0_SHIPDISCAMT=-3.00  
&PAYMENTREQUEST_0_INSURANCEAMT=1.00  
&PAYMENTREQUEST_0_AMT=105.87  
&PAYMENTREQUEST_0_CURRENCYCODE=USD  

---

与这个问题不直接相关，但由于这是谷歌在搜索错误消息时首先出现的问题，这可能对其他收到错误消息的人有用

如果未设置某些字段（null/blank），则可能会出现此错误

例如，在我的案例中，它是（为了清晰起见，添加了换行符）：

它也给了我同样的错误，尽管数量很好。 我认为这是一个解析问题，因为如果在L_PAYMENTREQUEST_0_NAME0=in之后插入一个空格

&L_PAYMENTREQUEST_0_NAME0=&L_PAYMENTREQUEST_0_AMT0=1.00

它很好用

---

所以我猜在PayPal端，它只是将“&L_PAYMENTREQUEST_0_AMT0=1.00”分配给L_PAYMENTREQUEST_0_NAME0，从而有效地将其从消息中删除，从而触发此错误，因为没有这一行，金额实际上不会相加。

我也遇到了同样的问题，并通过在foreach中按函数号\u格式为参数L\u PAYMENTREQUEST\u 0\u AMT$k设置价格来解决

例如：

$items_amount = 0;
foreach ($products as $k => $product) {
    $params["L_PAYMENTREQUEST_0_NAME$k"] = $product['name'];
    $params["L_PAYMENTREQUEST_0_DESC$k"] = $product['desc'];
    $params["L_PAYMENTREQUEST_0_AMT$k"] = number_format($product['priceIVA'], 2);
    $params["L_PAYMENTREQUEST_0_QTY$k"] = $product['count'];
    $items_amount += (floatval($product['priceIVA']) * $product['count']);
}

$params['PAYMENTREQUEST_0_AMT'] = $params['PAYMENTREQUEST_0_ITEMAMT'] = number_format($items_amount, 2);

---

您是否尝试过使用

L\u PAYMENTREQUEST\u 0\u QTY0=2

和

'L\u PAYMENTREQUEST\u 0\u AMT0'=>“100.00”

而

'PAYMENTREQUEST\u 0\u AMT'=>“100.00”

？也许paypal不计算2x50.00，只是查找每行的总数。我只是在这里做假设。唉，这不起作用。我不知道这是否会有帮助，但也许你所有的美元价值都应该正确格式化“0.00”向下投票这修正了我的“我已经添加了运费，为什么它会损坏？”问题。paypal文档真的应该链接到这个网站…有人知道我如何添加两个或更多的产品吗？…关于这个好例子？谢谢。

$items_amount = 0;
foreach ($products as $k => $product) {
    $params["L_PAYMENTREQUEST_0_NAME$k"] = $product['name'];
    $params["L_PAYMENTREQUEST_0_DESC$k"] = $product['desc'];
    $params["L_PAYMENTREQUEST_0_AMT$k"] = number_format($product['priceIVA'], 2);
    $params["L_PAYMENTREQUEST_0_QTY$k"] = $product['count'];
    $items_amount += (floatval($product['priceIVA']) * $product['count']);
}

$params['PAYMENTREQUEST_0_AMT'] = $params['PAYMENTREQUEST_0_ITEMAMT'] = number_format($items_amount, 2);