php paypal支付及退款代码

composer require paypal/paypal-checkout-sdk

<?php

namespace app\controller;

use app\BaseController;
use PayPalCheckoutSdk\Core\PayPalHttpClient;
use PayPalCheckoutSdk\Core\SandboxEnvironment;
use PayPalCheckoutSdk\Orders\OrdersCreateRequest;
use PayPalCheckoutSdk\Orders\OrdersCaptureRequest;
use PayPalCheckoutSdk\Orders\OrdersGetRequest;
use PayPalCheckoutSdk\Payments\CapturesRefundRequest;
use PayPalCheckoutSdk\Core\ProductionEnvironment;
use Sample\PayPalClient;
use think\facade\Request;

class Index extends BaseController
{

    // 支付申请
    public function test()
    {
        $clientId = "";
        $clientSecret = "";

        // 沙箱环境
        $environment = new SandboxEnvironment($clientId, $clientSecret);
        // 正式环境
        // $environment = new ProductionEnvironment($clientId, $clientSecret);
        $client = new PayPalHttpClient($environment);

        $request = new OrdersCreateRequest();
        $request->prefer('return=representation');
        $request->body = [
            "intent" => "CAPTURE",
            "purchase_units" => [[
                "reference_id" => "order_num_12345",
                "amount" => [
                    "value" => "10.00",
                    "currency_code" => "USD"
                ]
            ]],
            "application_context" => [
                // "cancel_url" => "https://example.com/cancel",
                // "return_url" => "https://example.com/return",
                "cancel_url" => "http://www.demo.com/index/cancel", // 取消地址
                "return_url" => "http://www.demo.com/index/callBack?order_num=order_num_12345", // 同步通知地址
            ]
        ];

        try {
            // Call API with your client and get a response for your call
            $response = $client->execute($request);

            // If call returns body in response, you can get the deserialized version from the result attribute of the response
            echo "

";
            print_r($response);
            // 返回跳转链接地址
            if ($response->statusCode == 201) {
                return $response->result->links[1]->href ?? "";
            }
        } catch (HttpException $ex) {
            echo $ex->statusCode;
            print_r($ex->getMessage());
        }
    }

    // 同步通知，确认支付
    public function callBack()
    {
//        $request = new OrdersCaptureRequest("APPROVED-ORDER-ID");
//        $request->prefer('return=representation');


        $token = trim($_GET['token']);

        $clientId = "";
        $clientSecret = "";

        // 沙箱环境
        $environment = new SandboxEnvironment($clientId, $clientSecret);
        // 正式环境
        // $environment = new ProductionEnvironment($clientId, $clientSecret);
        $client = new PayPalHttpClient($environment);

        //先判断订单当前状态-防止订单已经是已完成状态，再次扣款
        $request = new OrdersGetRequest($token);
        $response = $client->execute($request);

        try {

            $status = $response->result->status;
            switch ($status) {
                case 'COMPLETED':       //订单已经完成
                    //
                    break;
                case 'APPROVED':        //获取支付金额
                    $captureRequest = new OrdersCaptureRequest($token);
                    $captureRequest->prefer('return=representation');     //简洁参数-获取更多参数用return=representation
                    $captureResponse = $client->execute($captureRequest);
                    // 可以在此根据返回结果处理业务逻辑也可以在异步通知中处理
                    echo "

";
                    print_r($captureResponse);
                    $response = json_decode(json_encode($captureResponse), true);
                    if (isset($response['result']['status']) && $response['result']['status'] == "COMPLETED") {
                        echo 1;
                        echo "\n\r";
                        echo $response['result']['purchase_units']['0']['payments']['captures']['0']['id'];
                    }
                    break;
                default:        //其他
                    break;
            }
            // header("Location: https://www.mrchip.cn/");
            //  exit;
            return 'success';
        } catch (HttpException $ex) {
            echo $ex->statusCode;
            print_r($ex->getMessage());
        }
        return 'fail';
    }

    public function cancel()
    {
        return 'cancel';
    }

    // 异步通知
    public function notifyCallback()
    {
        $res = Request::param();
        apiLog('异步：' . json_encode($res));
    }

    // 退款
    public function refund()
    {
        // token 同步通知结果下  result->purchase_units->0->payments->captures->0->id
        // 异步通知结果下 resource->payments->captures->id
        $token = '62205066254602043';
        //   $request = new CapturesRefundRequest($token);
        $clientId = "";
        $clientSecret = "";

        // 沙箱环境
        $environment = new SandboxEnvironment($clientId, $clientSecret);
        // 正式环境
        // $environment = new ProductionEnvironment($clientId, $clientSecret);
        $client = new PayPalHttpClient($environment);

        //    $response = $client->execute($request);
//        echo "

";
//        print_r($response);


        $request = new CapturesRefundRequest($token);
        $body = array(
            'amount' =>
                array(
                    'value' => '1.00',
                    'currency_code' => 'USD'
                )
        );
        $request->body = $body;
        //  $client = PayPalClient::client();
        $response = $client->execute($request);

        $responseArray = json_decode(json_encode($response), true);
        // 退款成功
        if (isset($responseArray['result']['status']) && $responseArray['result']['status'] == 'COMPLETED') {
            // 处理业务逻辑
            return json(['code' => 1, 'msg' => "退款成功", 'data' => []]);
        }
        return json(['code' => 0, 'msg' => "退款失败", 'data' => []]);
    }


}