PayPal 结账智能支付按钮——PHP 服务器端调用

如何解决PayPal 结账智能支付按钮——PHP 服务器端调用

我正在尝试将 paypal checkout API 集成到我的网站。当我使用（第 1 部分）时，付款工作正常。当我尝试使用服务器端调用（第 2 部分、第 3 部分、第 4 部分）时，它不起作用。

感谢任何帮助。

第 1 部分（工作 - 所有客户端）

<script src="https://www.paypal.com/sdk/js?client-id=sb"></script>

<div id="paypal-button-container"></div>

<!-- Add the checkout buttons,set up the order and approve the order -->
<script>
  paypal.Buttons({
    createOrder: function(data,actions) {
      return actions.order.create({
        purchase_units: [{
          amount: {
            value: '10'
          }
        }]
      });
    },onApprove: function(data,actions) {
      return actions.order.capture().then(function(details) {
        alert('Transaction completed by ' + details.payer.name.given_name);
      });
    }
  }).render('#paypal-button-container'); // Display payment options on your web page
</script>

我希望服务器端调用 API，而不是客户端调用 Javascript。我正在尝试使用 PayPal Server-Side SDK，但文档不清楚如何配置它。

客户端。

第 2 部分

修改客户端代码。 更改客户端上的 createOrder 函数。此函数现在调用您的服务器来创建订单，而不是 actions.order.create()。

    createOrder: function() {
  return fetch('/my-server/create-paypal-transaction',{
    method: 'post',headers: {
      'content-type': 'application/json'
    }
  }).then(function(res) {
    return res.json();
  }).then(function(data) {
    return data.id; // Use the key sent by your server's response,ex. 'id' or 'token'
  });
}

服务器端 (PHP)

第 3 部分

namespace Sample;

use PayPalCheckoutSdk\Core\PayPalHttpClient;
use PayPalCheckoutSdk\Core\SandboxEnvironment;

ini_set('error_reporting',E_ALL); // or error_reporting(E_ALL);
ini_set('display_errors','1');
ini_set('display_startup_errors','1');

class PayPalClient
{
    /**
     * Returns PayPal HTTP client instance with environment that has access
     * credentials context. Use this instance to invoke PayPal APIs,provided the
     * credentials have access.
     */
    public static function client()
    {
        return new PayPalHttpClient(self::environment());
    }

    /**
     * Set up and return PayPal PHP SDK environment with PayPal access credentials.
     * This sample uses SandboxEnvironment. In production,use LiveEnvironment.
     */
    public static function environment()
    {
        $clientId = getenv("CLIENT_ID") ?: "PAYPAL-SANDBOX-CLIENT-ID";
        $clientSecret = getenv("CLIENT_SECRET") ?: "PAYPAL-SANDBOX-CLIENT-SECRET";
        return new SandboxEnvironment($clientId,$clientSecret);
    }
}

第 4 部分

namespace Sample\CaptureIntentExamples;

require __DIR__ . '/vendor/autoload.php';
//1. Import the PayPal SDK client that was created in `Set up Server-Side SDK`.
use Sample\PayPalClient;
use PayPalCheckoutSdk\Orders\OrdersCreateRequest;

class CreateOrder
{

// 2. Set up your server to receive a call from the client
  /**
   *This is the sample function to create an order. It uses the
   *JSON body returned by buildRequestBody() to create an order.
   */
  public static function createOrder($debug=false)
  {
    $request = new OrdersCreateRequest();
    $request->prefer('return=representation');
    $request->body = self::buildRequestBody();
   // 3. Call PayPal to set up a transaction
    $client = PayPalClient::client();
    $response = $client->execute($request);
    if ($debug)
    {
      print "Status Code: {$response->statusCode}\n";
      print "Status: {$response->result->status}\n";
      print "Order ID: {$response->result->id}\n";
      print "Intent: {$response->result->intent}\n";
      print "Links:\n";
      foreach($response->result->links as $link)
      {
        print "\t{$link->rel}: {$link->href}\tCall Type: {$link->method}\n";
      }

      // To print the whole response body,uncomment the following line
      // echo json_encode($response->result,JSON_PRETTY_PRINT);
    }

    // 4. Return a successful response to the client.
    return $response;
  }

  /**
     * Setting up the JSON request body for creating the order with minimum request body. The intent in the
     * request body should be "AUTHORIZE" for authorize intent flow.
     *
     */
    private static function buildRequestBody()
    {
        return array(
            'intent' => 'CAPTURE','application_context' =>
                array(
                    'return_url' => 'https://example.com/return','cancel_url' => 'https://example.com/cancel'
                ),'purchase_units' =>
                array(
                    0 =>
                        array(
                            'amount' =>
                                array(
                                    'currency_code' => 'USD','value' => '220.00'
                                )
                        )
                )
        );
    }
}


/**
 *This is the driver function that invokes the createOrder function to create
 *a sample order.
 */
if (!count(debug_backtrace()))
{
  CreateOrder::createOrder(true);
}