PHP新手30天實戰金流, Laravel6

前言

官網提及 Please note that if you are integrating with PayPal Checkout, this SDK and corresponding API v1/payments are in the process of being deprecated.因此我們決定要做版本更新，
官網有一份文件 Migrating from v1 to v2 供參考，以下程式碼皆出自於此。

Version 2

"2.0 includes all of the existing APIs (except payouts), and includes the new Orders API (Disputes and Marketplace coming soon)."
且
"We've simplified the interface to only provide HTTPRequest that can easily be called via our HttpClient."

How to update?

修改 composer.json 中 paypal/rest-api-sdk-php 的版本為 dev-2.0-beta 然後 composer update

What's diff?

先簡介付款流程：

1. create a payment
2. authorize the payment by buyer
3. execute the authorized payment
4. Merchant capture the authorized payment, done
   接著，買家可以提出退款申請：
5. refund the capture

更新到 version 2，要修改的地方為付款的第一步驟:

1. 原本用 apicontext 來記錄商家(client)資訊，現在改用 SandboxEnvironment 和 PayPalHttpClient 類別來處理。

   原本：

   $apiContext = new \PayPal\Rest\ApiContext(
       new \PayPal\Auth\OAuthTokenCredential(
           'client-id',
           'client-secret'
       )
   );
   
   $apiContext->setConfig(
       array('mode' => 'live')
   );
   

   現在：

   use PayPal\Core\PayPalHttpClient;
   use PayPal\Core\SandboxEnvironment;
   
   $environment = new SandboxEnvironment('client-id', 'client-secret'); // Use `ProductionEnvironment` for production
   $client = new PayPalHttpClient($environment);
   

2. 原本的body用物件串起, 現在直接寫在 body上：
   原本：

   $payer = new \PayPal\Api\Payer();
   $payer->setPaymentMethod('paypal');
   
   $amount = new \PayPal\Api\Amount();
   $amount->setTotal('1.00');
   $amount->setCurrency('USD');
   
   $transaction = new \PayPal\Api\Transaction();
   $transaction->setAmount($amount);
   
   $redirectUrls = new \PayPal\Api\RedirectUrls();
   $redirectUrls->setReturnUrl("https://example.com/your_redirect_url.html")
       ->setCancelUrl("https://example.com/your_cancel_url.html");
   
   $payment = new \PayPal\Api\Payment();
   $payment->setIntent('sale')
       ->setPayer($payer)
       ->setTransactions(array($transaction))
       ->setRedirectUrls($redirectUrls);
   
   try {
       $payment->create($apiContext);
       echo $payment;
   }
   catch (\PayPal\Exception\PayPalConnectionException $ex) {
       echo $ex->getData();
   }
   

   現在：

   $body = [
       "intent" => "sale",
       "transactions" => [
           [
               "amount" => [
                   "total" => "10",
                   "currency" => "USD"
               ]
           ]
       ],
       "redirect_urls" => [
           "cancel_url" => "http://paypal.com/cancel",
           "return_url" => "http://paypal.com/return"
       ],
       "payer" => [
           "payment_method" => "paypal"
       ]
   ];
   
   $request = new PaymentCreateRequest();
   $request->body = $body;
   
   try {
       return $client->execute($request);
   } catch (HttpException $ex) {
       echo $ex->statusCode;
       print_r($ex->getMessage());
   }
   

   會得到

       {
       "statusCode": 201,
       "result": {
           "id": "PAYID-LWQZ4SQ78W31241DC6035226",
           "intent": "sale",
           "state": "created",
           "payer": {
               "payment_method": "paypal"
           },
           "transactions": [
               {
                   "amount": {
                       "total": "470.00",
                       "currency": "THB"
                   },
                   "related_resources": []
               }
           ],
           "create_time": "2019-10-12T09:35:05Z",
           "links": [
               {
                   "href": "https://api.sandbox.paypal.com/v1/payments/payment/PAYID-LWQZ4SQ78W31241DC6035226",
                   "rel": "self",
                   "method": "GET"
               },
               {
                   "href": "https://www.sandbox.paypal.com/cgi-bin/webscr?cmd=_express-checkout&token=EC-8FE75461FU181391W",
                   "rel": "approval_url",
                   "method": "REDIRECT"
               },
               {
                   "href": "https://api.sandbox.paypal.com/v1/payments/payment/PAYID-LWQZ4SQ78W31241DC6035226/execute",
                   "rel": "execute",
                   "method": "POST"
               }
           ]
       },
       "headers": {
           "": "",
           "Date": "Sat, 12 Oct 2019 09",
           "Server": "Apache",
           "paypal-debug-id": "4e44cce1a690b",
           "Content-Language": "*",
           "HTTP_X_PP_AZ_LOCATOR": "sandbox.slc",
           "Paypal-Debug-Id": "4e44cce1a690b",
           "Set-Cookie": "X-PP-SILOVER=; Expires=Thu, 01 Jan 1970 00",
           "Vary": "Authorization",
           "Content-Length": "644",
           "Connection": "close",
           "Content-Type": "application/json"
       }
   }