php 使用PayPal 支付

paypal 一共有三种支付方式，我使用的是服务器集成方式。

这里是介绍 ：https://developer.paypal.com/docs/checkout/?mark=Express%20Checkout#integration-options

沙盒测试：

登录paypal的开发者地址： https://developer.paypal.com

创建沙盒测试账户（注册时会自动生成一个个人账户和商家账户，如果不能使用就自己创建几个）：https://developer.paypal.com/developer/accounts/

创建好之后去创建一个APP，用一个沙盒测试的商家用户来创建App

https://developer.paypal.com/developer/applications/

点击test1，我们会看到沙盒测试的账号、Client ID、点击show按钮会看到 Secret，Live 就是你正式上线后的**和账号

然后我们去下载php用的包文件

https://github.com/paypal/PayPal-PHP-SDK/releases

闲话不多说直接上代码了：

<?php
 
namespace app\index\controller;
 
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 = '你的clientId ';//ID
 
    const clientSecret = '你的clientSecret';//秘钥
 
    const accept_url = 'pay.test.com/Paypal/Callback';//返回地址
 
    const Currency = 'USD';//币种
 
    const error_log = 'PayPal-error.log';//错误日志
 
    const success_log = 'PayPal-success.log';//成功日志
 
 
    protected $PayPal;
 
    public function __construct()
    {
 
        $this->PayPal = new ApiContext(
            new OAuthTokenCredential(
                self::clientId,
                self::clientSecret
            )
        );
        //如果是沙盒测试环境不设置，请注释掉
        $this->PayPal->setConfig(
            array(
                'mode' => 'live',
            )
        );
    }
 
    public function index()
    {
        $product = input('product');
        if (empty($product)) {
            return ajax_return(400, '商品不能为空');
        }
 
        $price = input('price');
        if (empty($price)) {
            return ajax_return(400, '价格不能为空');
        }
 
        $shipping = input('shipping', 0);
 
 
        $description = input('description');
        if (empty($description)) {
            return ajax_return(400, '描述内容不能为空');
        }
 
        $this->pay($product, $price, $shipping, $description);
    }
 
    /**
     * @param
     * $product 商品
     * $price 价钱
     * $shipping 运费
     * $description 描述内容
     */
    public function pay($product, $price, $shipping = 0, $description)
    {
        $paypal = $this->PayPal;
 
        $total = $price + $shipping;//总价
 
        $payer = new Payer();
        $payer->setPaymentMethod('paypal');
 
        $item = new Item();
        $item->setName($product)->setCurrency(self::Currency)->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();
        $transaction->setAmount($amount)->setItemList($itemList)->setDescription($description)->setInvoiceNumber(uniqid());
 
        $redirectUrls = new RedirectUrls();
        $redirectUrls->setReturnUrl(self::accept_url . '?success=true')->setCancelUrl(self::accept_url . '/?success=false');
 
        $payment = new Payment();
        $payment->setIntent('sale')->setPayer($payer)->setRedirectUrls($redirectUrls)->setTransactions([$transaction]);
 
        try {
            $payment->create($paypal);
        } catch (PayPalConnectionException $e) {
            echo $e->getData();
            die();
        }
 
        $approvalUrl = $payment->getApprovalLink();
        header("Location: {$approvalUrl}");
    }
 
    /**
     * 回调
     */
    public function Callback()
    {
        $success = trim($_GET['success']);
 
        if ($success == 'false' && !isset($_GET['paymentId']) && !isset($_GET['PayerID'])) {
            pay_logs(self::error_log, '取消付款');
            exit();
        }
 
        $paymentId = trim($_GET['paymentId']);
        $PayerID = trim($_GET['PayerID']);
 
        if (!isset($success, $paymentId, $PayerID)) {
            pay_logs(self::error_log, '支付失败');
            exit();
        }
 
        if ((bool)$_GET['success'] === 'false') {
            pay_logs(self::error_log, '支付失败，支付ID【' . $paymentId . '】,支付人ID【' . $PayerID . '】');
            exit();
        }
 
        $payment = Payment::get($paymentId, $this->PayPal);
 
        $execute = new PaymentExecution();
 
        $execute->setPayerId($PayerID);
 
        try {
            $payment->execute($execute, $this->PayPal);
        } catch (Exception $e) {
            pay_logs(self::error_log, $e . ',支付失败，支付ID【' . $paymentId . '】,支付人ID【' . $PayerID . '】');
            exit();
        }
        pay_logs(self::success_log, '支付成功，支付ID【' . $paymentId . '】,支付人ID【' . $PayerID . '】');
    }
 
 
}

下面是php-sdk文档的地址：

http://paypal.github.io/PayPal-PHP-SDK/

沙盒测试：

https://www.sandbox.paypal.com #沙盒测试账号登陆地址

请上创建的沙盒测试个人用户查看消费的记录

请上用来创建APP的沙盒测试商家用户来查看进账记录