PayPal Call Payment Details 功能

Question

我下载了 paypalplatform.php，不记得从哪里下载的，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 );

这会返回大量有用的数据，例如 status 和 paymentInfoList.paymentInfo(0).transactionStatus 等等。

我知道我可以写很多 if 语句来尝试解释当我调用 CallPaymentDetails 时返回给我的所有值，我觉得这很容易出错，或者可能导致我忽略场景。

所以我的问题是，是否存在一个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，它可以处理所有场景？

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

}

如果我尝试做所有变量，我可能会一直试图捕捉所有场景，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？

Answer 1

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

Paypal use Github 非常多地分享所有不同语言的所有 API。我真的建议您查看一些存储库，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

它为您提到的函数提供了一个simple call，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

它向a more detailed example 介绍如何使用您的功能。它从 html 表单中获取值，更容易对其进行测试。与前面的示例一样，我们可以看到 API 返回的状态相同：

$ack = strtoupper($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开关/案例来处理响应状态。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));
}