我下载了 paypalplatform.php，不记得从哪里下载了，但它给了我一个不错的小功能，可以让我检查付款状态:

CallPaymentDetails( $payKey, $transactionId, $trackingId );

这会返回很多有用的数据，例如 status 和 paymentInfoList.paymentInfo(0).transactionStatus 等等。

我知道我可以写很多 if 语句来尝试解释调用 CallPaymentDetails 时返回给我的所有值，我觉得这很容易出错，否则它可能会导致我忽略场景。

所以我的问题是，是否存在将所有值都考虑在内的示例模板，也就是说，我不必重新发明轮子，它可以处理所有情况？

例如，目前我有:

$resArray = CallPaymentDetails( $payKey, $transactionId, $trackingId );

if(strtoupper($resArray["responseEnvelope.ack"]) == "SUCCESS") {

    if(strtoupper($resArray["status"]) == "CREATED") {

        // do something

    } elseif(strtoupper($resArray["status"]) == "EXPIRED") {

        // do something

    } elseif(strtoupper($resArray["status"]) == "COMPLETED") {

        // do something

        if(strtoupper($resArray["paymentInfoList.paymentInfo(0).transactionStatus"]) == "PENDING") {

            // do something

        } elseif(strtoupper($resArray["paymentInfoList.paymentInfo(0).transactionStatus"]) == "FAILED") {

            // do something

        } else {

            // what other value could be returned

        }

    } else {

        // what other value could be returned

    }

} else {

    // what other value could be returned

}

如果我尝试处理所有变量，我可能会永远 try catch 所有场景，这就是为什么我想知道是否已经存在这样一个模板，它通过 if 语句满足所有场景？

最佳答案

首先，你不应该在互联网上获取像paypalplatform.php这样的文件。

Paypal use Github很多可以共享所有不同语言的所有 API。我真的建议你看看一些存储库，例如:

• merchant-sqk-php
• sdk-core-php
• codesample-php
• adaptivepayments-sdk-php

最后两个对你来说很有趣。它们都为您的案例提供了有用的代码示例。

codesamples-php

它呈现一个 simple call到您提到的函数并描述了可以使用一个变量 $response->status 找到的所有返回消息。评论揭示了这个变量可以有的所有情况:

if ($response->responseEnvelope->ack == "Success")
{

  // The status of the payment. Possible values are:
  //
  // * CREATED - The payment request was received; funds will be
  // transferred once the payment is approved
  // * COMPLETED - The payment was successful
  // * INCOMPLETE - Some transfers succeeded and some failed for a
  // parallel payment or, for a delayed chained payment, secondary
  // receivers have not been paid
  // * ERROR - The payment failed and all attempted transfers failed
  // or all completed transfers were successfully reversed
  // * REVERSALERROR - One or more transfers failed when attempting
  // to reverse a payment
  // * PROCESSING - The payment is in progress
  // * PENDING - The payment is awaiting processing
  $logger->log("Payment Status : ".$response->status);
}

adaptivepayments-sdk-php

它呈现a more detailed example关于如何使用你的功能。它从 html 表单中获取值，更容易测试它。与前面的示例一样，我们可以看到 API 返回的相同状态:

$ack = strtoupper($response->responseEnvelope->ack);
if($ack != "SUCCESS"){
  echo "<b>Error </b>";
  echo "<pre>";
  print_r($response);
  echo "</pre>";
} else {
/*
 *       The status of the payment. Possible values are:

       * CREATED - The payment request was received; funds will be
       transferred once the payment is approved
       * COMPLETED - The payment was successful
       * INCOMPLETE - Some transfers succeeded and some failed for a
       parallel payment or, for a delayed chained payment, secondary
       receivers have not been paid
       * ERROR - The payment failed and all attempted transfers failed
       or all completed transfers were successfully reversed
       * REVERSALERROR - One or more transfers failed when attempting
       to reverse a payment
       * PROCESSING - The payment is in progress
       * PENDING - The payment is awaiting processing
 */
  echo "<table>";
  echo "<tr><td>Ack :</td><td><div id='Ack'>$ack</div> </td></tr>";
  echo "<tr><td>PayKey :</td><td><div id='PayKey'>$response->payKey</div> </td></tr>";
  echo "<tr><td>Status :</td><td><div id='Status'>$response->status</div> </td></tr>";
  echo "</table>";
  echo "<pre>";
  print_r($response);
  echo "</pre>";
}

在这两种情况下，您只需要一个简单的 switch/case 来处理响应状态。类似的东西:

switch ($status)
{
  case 'CREATED':
    // handle CREATED state
    break;
  case 'COMPLETED':
    // handle COMPLETED state
    break;
  case 'INCOMPLETE':
    // handle INCOMPLETE state
    break;
  case 'ERROR':
    // handle ERROR state
    break;
  case 'REVERSALERROR':
    // handle REVERSALERROR state
    break;
  case 'PROCESSING':
    // handle PROCESSING state
    break;
  case 'PENDING':
    // handle PENDING state
    break;

  default:
    throw new Exception(sprintf("State '%s' isn't handle.", $status));
}

关于php - PayPal 的 CallPaymentDetails 函数，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/18999916/