Paypal支付/回调/退款

一.下载依赖包

composer require "paypal/rest-api-sdk-php:*"

二.发起支付

<?php
use PayPal\Api\Payer;
use PayPal\Api\Item;
use PayPal\Api\ItemList;
use PayPal\Api\Details;
use PayPal\Api\Amount;
use PayPal\Api\Transaction;
use PayPal\Api\RedirectUrls;
use PayPal\Api\Payment;
use PayPal\Auth\OAuthTokenCredential;
use PayPal\Exception\PayPalConnectionException;
use PayPal\Rest\ApiContext;
use PayPal\Api\PaymentExecution;class Paypal{const clientId = 'xxxxxxxxx';const clientSecret = 'xxxxxxxx';const succee = 'http://xxx.com/Callback?success=true';//发起支付成功同步回调地址const fail= 'http://xxx.com/Callback/?success=false';//发起支付成功同步回调地址protected $PayPal;public function __construct(){$this->PayPal = new ApiContext(new OAuthTokenCredential(self::clientId,self::clientSecret));//设置支付模式：沙盒模式（sandbox） 和 正式（live）$this->PayPal->setConfig(
//            array(
//                'mode' => 'sandbox',
//                'log.LogEnabled' => true,
//                'log.FileName' => '../PayPal.log',
//                'log.LogLevel' => 'DEBUG',
//                'cache.enabled' => true
//            )array('mode' => 'live','log.LogEnabled' => true,'log.FileName' => '../PayPal.log','log.LogLevel' => 'FINE','cache.enabled' => true));public function pay() {$product = '商品';$price = 1;//价钱$shipping = 0;//运费$description = '1123123';$paypal = $this->PayPal;$total = $price + $shipping;//总价$payer = new Payer();$payer->setPaymentMethod('paypal');$item = new Item();$item->setName($product)->setCurrency('USD')->setQuantity(1)->setPrice($price);$itemList = new ItemList();$itemList->setItems([$item]);$details = new Details();$details->setShipping($shipping)->setSubtotal($price);$amount = new Amount();$amount->setCurrency(self::Currency)->setTotal($total)->setDetails($details);$transaction = new Transaction();//描述内容$transaction->setAmount($amount)->setItemList($itemList)->setDescription($description)->setInvoiceNumber(uniqid());$redirectUrls = new RedirectUrls();$redirectUrls->setReturnUrl(self::succee)->setCancelUrl(self::fail);$payment = new Payment();$payment->setIntent('sale')->setPayer($payer)->setRedirectUrls($redirectUrls)->setTransactions([$transaction]);try {$payment->create($paypal);} catch (PayPalConnectionException $e) {echo $e->getData();}$approvalUrl = $payment->getApprovalLink();header("Location: {$approvalUrl}");}

三.同步回调

    /*** 回调*/public function Callback(){$success = trim($_GET['success']);if ($success == 'false' && !isset($_GET['paymentId']) && !isset($_GET['PayerID'])) {echo '取消付款';die;}$paymentId = trim($_GET['paymentId']);$PayerID = trim($_GET['PayerID']);if (!isset($success, $paymentId, $PayerID)) {echo '支付失败';die;}if ((bool)$_GET['success'] === 'false') {echo  '支付失败，支付ID【'.$paymentId.'】,支付人ID【'.$PayerID.'】';die;}$payment = Payment::get($paymentId, $this->PayPal);$execute = new PaymentExecution();$execute->setPayerId($PayerID);try {$payment->execute($execute, $this->PayPal);} catch (Exception $e) {echo ',支付失败，支付ID【'.$paymentId.'】,支付人ID【'.$PayerID.'】';}echo '支付成功，支付ID【'.$paymentId.'】,支付人ID【'.$PayerID .'】';}

四.异步回调

  public function notify(){//获取回调结果$json_data = $this->get_JsonData();if(!empty($json_data)){Log::debug("paypal notify info:\r\n".json_encode($json_data));}else{Log::debug("paypal notify fail:参加为空");}//自己打印$json_data的值看有那些是你业务上用到的//比如我用到$data['invoice'] = $json_data['resource']['invoice_number'];$data['txn_id'] = $json_data['resource']['id'];$data['total'] = $json_data['resource']['amount']['total'];$data['status'] = isset($json_data['status'])?$json_data['status']:'';$data['state'] = $json_data['resource']['state'];try {//处理相关业务} catch (\Exception $e) {//记录错误日志Log::error("paypal notify fail:".$e->getMessage());return "fail";}return "success";}public function get_JsonData(){$json = file_get_contents('php://input');if ($json) {$json = str_replace("'", '', $json);$json = json_decode($json,true);}return $json;}

五.退款

   public function returnMoney(){try {$txn_id = "xxxxxxx";  //异步回调中拿到的id$amt = new Amount();$amt->setCurrency('USD')->setTotal('99');  // 退款的费用$refund = new Refund();$refund->setAmount($amt);$sale = new Sale();$sale->setId($txn_id);$refundedSale = $sale->refund($refund, $this->PayPal);} catch (\Exception $e) {// PayPal无效退款return json_decode(json_encode(['message' => $e->getMessage(), 'code' => $e->getCode(), 'state' => $e->getMessage()]));  // to object}// 退款完成return $refundedSale; }

原文链接：https://learnku.com/articles/26282

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Paypal支付/回调/退款

一.下载依赖包

二.发起支付

三.同步回调

四.异步回调

五.退款

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