PayPal支付php開發，thinkphp3.2，移動端的WebView

paypal支付後臺部分代碼，框架用的thinkphp，有些代碼不能直接複製，後臺有幾個坑要注意一下，生產模式填的不是production，是LIVE，四個字母都要大寫（這個我吃了虧，查了好多外國資料才知道），並且切換調試CLIENT_ID和CLIENT_SECRET也要更換，調試模式爲sanbox。

還有一點就是支付選的幣種，你正式上線的時候，paypal的賬號裏面也必須擁有相應幣種的支付

<?php
namespace PayApi\Controller;
vendor('PayPal.autoload');
use Think\Controller;
use Think\Log;
class TestController extends Controller {
    private $CLIENT_ID = '你的CLIENT_ID';
    private $CLIENT_SECRET = '你的CLIENT_SECRET';
    public function getToken(){
        $apiContext = new \PayPal\Rest\ApiContext(
            new \PayPal\Auth\OAuthTokenCredential($this->CLIENT_ID,$this->CLIENT_SECRET)
        );
        $apiContext->setConfig(
            array(
                'mode' => 'LIVE',
                // 'log.LogEnabled' => true,
                // 'log.FileName' => '../PayPal.log',
                // 'log.LogLevel' => 'DEBUG', // PLEASE USE `INFO` LEVEL FOR LOGGING IN LIVE ENVIRONMENTS
                // 'cache.enabled' => true,
                //'cache.FileName' => '/PaypalCache' // for determining paypal cache directory
                // 'http.CURLOPT_CONNECTTIMEOUT' => 30
                // 'http.headers.PayPal-Partner-Attribution-Id' => '123123123'
                //'log.AdapterFactory' => '\PayPal\Log\DefaultLogFactory' // Factory class implementing \PayPal\Log\PayPalLogFactory
            )
        );
        return $apiContext;
    }
    // 創建PayPal付款賬單
	public function createPay(){
        $money = I('post.money');
        $user_id = I('post.user_id');

        if (empty($money) || empty($order['user_id']) ) {
            $result['msg'] = 'Parameter Error';
            $result['code'] = 0;
        }else{
            $apiContext = $this->getToken();
            $payer = new \PayPal\Api\Payer();
            $payer->setPaymentMethod('paypal');

            // 設置幣種
            $amount = new \PayPal\Api\Amount();
            $amount->setTotal($money);
            $amount->setCurrency('USD');

            // 設置訂單金額
            $transaction = new \PayPal\Api\Transaction();
            $transaction->setAmount($amount);

            $payment = new \PayPal\Api\Payment();
            $payment->setIntent('sale')
                    ->setPayer($payer)
                    ->setTransactions(array($transaction))
                    ->setRedirectUrls($redirectUrls);
            try {
                $payment->create($apiContext);
                $result['paymentID'] = $payment->id;
                if (!empty($result['paymentID'])) {
                    // 處理業務邏輯
                    // ...
                    $result['msg'] = 'Success';
                    $result['code'] = 200;
                }else{
                    $result['msg'] = 'Create payment failure';
                    $result['code'] = 0;
                }
                // echo "\n\nRedirect user to approval_url: " . $payment->getApprovalLink() . "\n";
            }
            catch (\PayPal\Exception\PayPalConnectionException $ex) {
                // This will print the detailed information on the exception.
                //REALLY HELPFUL FOR DEBUGGING
                // dump($ex->getData());exit();
                $result['msg'] = 'Create payment failure';
                $result['code'] = 0;
            }
        }
        $this->ajaxReturn($result);
    }
    // 執行檢查PayPal付款賬單
    public function executePay(){
        $paymentID = I('post.paymentID');
        $payerID = I('post.payerID');
        $apiContext = $this->getToken();
        $paymentObj = new \PayPal\Api\Payment();
        $transaction = new \PayPal\Api\Transaction();
        $payment = $paymentObj::get($paymentID, $apiContext);
        $execution = new \PayPal\Api\PaymentExecution();
        $execution->setPayerId($payerID);
        try {
            $payment->execute($execution, $apiContext);
            $state = $payment->transactions[0]->related_resources[0]->sale->state;
            $approval = $payment->state;
            if ($state == 'completed' && $approval == 'approved') {
                // 支付完成，更改訂單狀態
                // ...
                $result['code'] = 200;
                $result['msg'] = 'Success';
            }else{
                $result['code'] = 0;
                $result['msg'] = 'NO pay';
            }
        } catch (Exception $ex) {
            $result['code'] = 0;
            $result['msg'] = 'Executed Payment';
        }
        $this->ajaxReturn($result);
    }
}

前端html代碼，根據具體業務需求來，我這邊是給app內webview用的，對接安卓和蘋果，分別注入不一樣的函數，用的不同的js代碼

<!DOCTYPE html>

<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge,chrome=1">
    <meta name="format-detection" content="telephone=no"/>
    <meta name="viewport" content="width=device-width,initial-scale=1,user-scalable=no">
    <title></title>
    <script src="https://www.paypalobjects.com/api/checkout.js"></script>
    <script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
    <style type="text/css">
        body{background: #eee;}
        .content{
            background: #fff;
            margin-left: 0.5%;
            margin-top:25px;
            width: 99%;
            height: 500px;

        }
        .contain-top{
            font-family: "Microsoft YaHei";
            text-align: center;
            padding-top: 20px;
            font-size: 20px;
            color: #FF4040;
            width: 100%;
            height: 80px;
            border-bottom: 1px dotted #ccc;
        }
        .contain-bot{
            width: 100%;
        }
        #paypal-button-container{
            margin: 0 auto;
            margin-top: 75px;
            margin-bottom: 75px;
            width: 80%;
            height: 80px;
        }
    </style>
</head>

<body>
    <div class="content">
        <div class="contain-top">
            Please click the button below to complete the payment
        </div>
        <div class="contain-bot" id="paypalbutton">
            <div class="button">
                <div id="paypal-button-container"></div>
            </div>
        </div>
    </div>
    <script>
        var money = 10;
        var user_id = 1;
        var pay_from = 'ios';
        if (pay_from == 'ios') {
            function setupWebViewJavascriptBridge(callback) {
                if (window.WebViewJavascriptBridge) { return callback(WebViewJavascriptBridge); }
                if (window.WVJBCallbacks) { return window.WVJBCallbacks.push(callback); }
                window.WVJBCallbacks = [callback];
                var WVJBIframe = document.createElement('iframe');
                WVJBIframe.style.display = 'none';
                WVJBIframe.src = 'wvjbscheme://__BRIDGE_LOADED__';
                document.documentElement.appendChild(WVJBIframe);
                setTimeout(function() { document.documentElement.removeChild(WVJBIframe) }, 0)
            }
            setupWebViewJavascriptBridge(function(bridge) {
                bridge.registerHandler('showResult', function(data, responseCallback) {
                    responseCallback('js執行過了');
                })
            })
        }
        paypal.Button.render({

            env: 'production', // sandbox | production
            style: {
                label: 'paypal',
                size:  'responsive',    // small | medium | large | responsive
                shape: 'rect',     // pill | rect
                color: 'blue',     // gold | blue | silver | black
                tagline: false    
            },
            // Show the buyer a 'Pay Now' button in the checkout flow
            commit: true,

            // payment() is called when the button is clicked
            payment: function() {
                // Set up a url on your server to create the payment
                var CREATE_URL = '創建支付訂單的路徑';
                var data = {
                    money:money,
                    user_id:user_id
                };
                // Make a call to your server to set up the payment
                return paypal.request.post(CREATE_URL, data)
                    .then(function(res) {
                        if (res.code == 200) {
                            return res.paymentID;
                        }else{
                            if (pay_from == 'ios') {
                                var postdata = {'code': res.code,'msg': res.msg};
                                WebViewJavascriptBridge.callHandler('showResult', postdata, function(response) {
                                    document.getElementById("returnValue").value = response;
                                })
                            }else{
                                JsInterface.showResult(res.code);
                            }
                        }
                        
                    });
            },

            // onAuthorize() is called when the buyer approves the payment
            onAuthorize: function(data, actions) {
                // Set up a url on your server to execute the payment
                var EXECUTE_URL = '後臺支付完成驗證的路徑';

                // Set up the data you need to pass to your server
                var data = {
                    paymentID: data.paymentID,
                    payerID: data.payerID
                };

                // Make a call to your server to execute the payment
                return paypal.request.post(EXECUTE_URL, data)
                    .then(function (res) {
                        if (pay_from == 'ios') {
                            var postdata = {'code': res.code,'msg': res.msg};
                            WebViewJavascriptBridge.callHandler('showResult', postdata, function(response) {
                                document.getElementById("returnValue").value = response;
                            })
                        }else{
                            JsInterface.showResult(res.code);
                        }
                    });
            }

        }, '#paypal-button-container');
        

    </script>
</body>

前端展示效果

 

其他的就沒什麼問題了