環境準備
- 註冊paypal賬號
- 註冊paypal開發者賬號
- 建立paypal沙盒測試賬戶
- 建立paypal應用
- 下載PHP SDK
- 實現支付
- 實現支付成功回撥
- 實現退款
- 更多API程式碼模板
註冊paypal賬號
- www.paypal.com 註冊商家賬戶
- 選擇,”建立商家使用者”,根據要求填寫資訊,註冊完得去郵箱啟用
註冊paypal開發者賬號
- developer.paypal.com 使用上一步註冊的賬號登入
- 在左側導航欄點選Accounts,建立兩個sandbox賬號,一個個人賬號(personal)用於付款,一個商家賬號(business)用於收款,系統已經預設建立了兩個,可以自己選擇建立,方便記憶; 建立賬號後記得給當前賬號新增餘額用於接下來的測試。
- 用剛才建立的測試賬號登入沙盒測試站點,檢視金額和交易資訊www.sandbox.paypal.com
建立沙盒應用APP
- 賬號預設給建立好了一個Default Application,點選檢視獲取 ClientId和Secret;儲存起來,接下來介面呼叫會使用到;(上線時請重新建立一個Live的應用)
下載SDK
- 本人使用laravel框架,使用composer下載paypal包
composer require paypal/rest-api-sdk-php
實現支付
以下是生成支付的程式碼片段,虛擬碼
function createPayPal(){ $shippingPrice = 2; $taxPrice = 0; $subTotal = 26; $item1 = new PayPal\Api\Item(); $item1->setName("產品2")->setCurrency("USD")->setQuantity(1)->setPrice(10); $item2 = new PayPal\Api\Item(); $item2->setName("產品1")->setCurrency("USD")->setQuantity(2)->setPrice(8); $itemList = new PayPal\Api\ItemList(); $itemList->addItems([$item1,$item2]); // Set payment details $details = new PayPal\Api\Details(); $details->setShipping($shippingPrice)->setTax($taxPrice)->setSubtotal($subTotal); // Set payment amount //注意,此處的subtotal,必須是產品數*產品價格,所有值必須是正確的,否則會報錯 $total = $shippingPrice + $subTotal + $taxPrice; $amount = new PayPal\Api\Amount(); $amount->setCurrency("USD")->setTotal($total)->setDetails($details); // Set transaction object $transaction = new PayPal\Api\Transaction(); $transaction->setAmount($amount)->setItemList($itemList)->setDescription("這是交易描述") ->setInvoiceNumber(uniqid());//setInvoiceNumber為支付唯一識別符號,在使用時建議改成訂單號 $payer = new PayPal\Api\Payer(); $payer->setPaymentMethod('paypal');//["credit_card", "paypal"] $redirectUrls = new PayPal\Api\RedirectUrls(); $redirectUrl = "http://test.com/redirect/success";//支付成功跳轉的回撥 $cancelUrl = "http://test.com/redirect/cancel";//取消支付的回撥 $redirectUrls->setReturnUrl($redirectUrl)->setCancelUrl($cancelUrl); // Create the full payment object $payment = new PayPal\Api\Payment(); $payment->setIntent("sale")->setPayer($payer)->setRedirectUrls($redirectUrls)->addTransaction($transaction); try { $clientId = "xxxxxx";//上面應用的clientId和secret $secret = "XXXXXX"; $oAuth = new \PayPal\Auth\OAuthTokenCredential($clientId, $secret); $apiContext = new \PayPal\Rest\ApiContext($oAuth); if(env('APP_DEBUG') === false ){ $apiContext->setConfig(['mode' => 'live']);//設定線上環境,預設是sandbox } $payment->create($apiContext); $approvalUrl = $payment->getApprovalLink(); dd($approvalUrl);//這個是請求支付的連結,在瀏覽器中請求此連結就會跳轉到支付頁面 } catch (\Exception $e) { dd($e->getMessage());//錯誤提示 } }
以下是支付成功的回撥程式碼片段,虛擬碼
function payRedirect(Request $request) { $paymentID = $request->get('paymentId'); $payerId = $request->get('PayerID'); $clientId = "xxxxxx";//上面應用的clientId和secret $secret = "XXXXXX"; $oAuth = new \PayPal\Auth\OAuthTokenCredential($clientId, $secret); $apiContext = new \PayPal\Rest\ApiContext($oAuth); if(env('APP_DEBUG') === false ){ $apiContext->setConfig(['mode' => 'live']);//設定線上環境,預設是sandbox } $payment = \PayPal\Api\Payment::get($paymentID, $apiContext); $execute = new \PayPal\Api\PaymentExecution(); $execute->setPayerId($payerId); try{ $payment = $payment->execute($execute, $apiContext);//執行,從paypal獲取支付結果 $paymentState = $payment->getState();//Possible values: created, approved, failed. $invoiceNum = $payment->getTransactions()[0]->getInvoiceNumber(); $payNum = $payment->getTransactions()[0]->getRelatedResources()[0]->getSale()->getId();//這是支付的流水單號,必須儲存,在退款時會使用到 $total = $payment->getTransactions()[0]->getRelatedResources()[0]->getSale()->getAmount()->getTotal();//支付總金額 $transactionState = $payment->getTransactions()[0]->getRelatedResources()[0]->getSale()->getState();//Possible values: completed, partially_refunded, pending, refunded, denied. if($paymentState == 'approved' && $transactionState == 'completed'){ //處理成功的邏輯,例如:判斷支付金額與訂單金額,更新訂單狀態等 return "success";//返回成功標識 }else{ //paypal回撥錯誤,paypal狀態不正確 return "error";//返回錯誤標識 } }catch(\Exception $e){ dd($e->getMessage()); } }
退款
退款必須要有支付成功的流水單號
一個流水單號可以進行多次退款
退款成功之後,在賬號的交易記錄中不體現,測試時請登入測試賬號自己記錄一下餘額的變化情況,以確定退款是否成功
商家賬號會減少餘額並增加手續費(手續費是之前付款多收的),使用者賬號會增加餘額
function refundOrder() { try{ $refundRequest = new \PayPal\Api\RefundRequest(); $amount = new \PayPal\Api\Amount(); $amount->setCurrency("USD")->setTotal(10);//退總金額 $refundRequest->setAmount($amount); $refundRequest->setDescription("退款測試"); $sale = new \PayPal\Api\Sale(); $sale->setId("XXXXXXXXX");//支付單號,支付成功時儲存的支付流水單號 $clientId = "xxxxxx";//上面應用的clientId和secret $secret = "XXXXXX"; $oAuth = new \PayPal\Auth\OAuthTokenCredential($clientId, $secret); $apiContext = new \PayPal\Rest\ApiContext($oAuth); if(env('APP_DEBUG') === false ){ $apiContext->setConfig(['mode' => 'live']);//設定線上環境,預設是sandbox } $detailedRefund = $sale->refundSale($refundRequest, $apiContext);//調介面 $refundState = $detailedRefund->getState();//Possible values: pending, completed, cancelled, failed. //var_dump($refundedSale); if($refundState == 'completed'){ //退款成功,返回 }else{ dd('paypal 退款失敗, 狀態不正確'); } }catch (\Exception $exception){ dd($exception->getMessage());//發生異常 } }
更多介面程式碼示例
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