贝宝 REST API 实现

Posted 2023-02-22

【中文标题】贝宝 REST API 实现

【英文标题】：Paypal REST Api implmentation

【发布时间】：2013-10-17 06:19:21

【问题描述】：

我是 curl 的新手，所以我使用的是 Paypal Developer 博客上的代码，我很难让它为我工作。这是我正在使用的代码

class paypal 
    private $access_token;
    private $token_type;

    /**
    * Constructor
    *
    * Handles oauth 2 bearer token fetch
    * @link https://developer.paypal.com/webapps/developer/docs/api/#authentication--headers
    */
    public function __construct()
        $postvals = "grant_type=client_credentials";
        $uri = PAYMENT_URI . "v1/oauth2/token";

        $auth_response = self::curl($uri, 'POST', $postvals, true);
        $this->access_token = $auth_response['body']->access_token;
        $this->token_type = $auth_response['body']->token_type;
    

    /**
    * cURL
    *
    * Handles GET / POST requests for auth requests
    * @link http://php.net/manual/en/book.curl.php
    */
    private function curl($url, $method = 'GET', $postvals = null, $auth = false)
        $ch = curl_init($url);

        //if we are sending request to obtain bearer token
        if ($auth)
            $headers = array("Accept: application/json", "Accept-Language: en_US");
            curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
            curl_setopt($ch, CURLOPT_USERPWD, CLIENT_ID . ":" .CLIENT_SECRET);
            curl_setopt($ch, CURLOPT_SSLVERSION, 3);
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
        //if we are sending request with the bearer token for protected resources
         else 
            $headers = array("Content-Type:application/json", "Authorization:$this->token_type $this->access_token");
        

        $options = array(
            CURLOPT_HEADER => true,
            CURLINFO_HEADER_OUT => true,
            CURLOPT_HTTPHEADER => $headers,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_VERBOSE => true,
            CURLOPT_TIMEOUT => 10
        );

        if ($method == 'POST')
            $options[CURLOPT_POSTFIELDS] = $postvals;
            $options[CURLOPT_CUSTOMREQUEST] = $method;
        

        curl_setopt_array($ch, $options);

        $response = curl_exec($ch);
        $header = substr($response, 0, curl_getinfo($ch,CURLINFO_HEADER_SIZE));
        $body = json_decode(substr($response, curl_getinfo($ch,CURLINFO_HEADER_SIZE)));
        curl_close($ch);

        return array('header' => $header, 'body' => $body);
    

    // Function for Processing Payment
    function process_payment($request) 
        $postvals = $request;
        $uri = PAYMENT_URI . "v1/payments/payment";
        return self::curl($uri, 'POST', $postvals);
    


if (isset($_SESSION['payment_type']) && ($_SESSION['payment_type'] == 'paypal'))  // User has chosen to pay with Paypal.


    // Retrive Shopping cart contents
    $r = mysqli_query($dbc, "CALL get_shopping_cart_contents('$uid')");

    $request = array(
        'intent' => 'sale',
        'redirect_urls' => array(
            'return_url' =>'http://store.example.com/final',
            'cancel_url' =>'http://store.example.com/payment'
        ),
        'payer' => array(
            'payment_method' =>'paypal'
        ),
        'transactions' => array(
            'amount' => array(
                'total' =>''.number_format($order_total,2).'',
                'currency' =>'USD',
                'details' => array(
                    'subtotal' =>''.number_format($subtotal,2).'',
                    'shipping' =>''.number_format($shipping,2).''
                ),
                'item_list' => array(

                )
            ),
            'description' =>'Mike and Maureen Photography - Order ID #'.$order_id.''
        )
    );

    while ($items = mysqli_fetch_array($r, MYSQLI_ASSOC)) 

        $newitems = array(
            'quantity' =>''.$items['quantity'].'',
            'name' =>''.$items['name'].'',
            'price' =>''.get_price($items['price'],$items['sales_price']).'',
            'currency' =>'USD'
        );
        $request['transactions']['amount']['item_list']['items'][] = $newitems;  
    

    $request = json_encode($request);

    process_payment($request);

我很擅长 php，但是整个课程，公共/私人的东西让我失望。我可以在没有它的情况下使用此代码还是会给我带来麻烦？如何运行 process_payment 函数而不引发错误。我收到“致命错误：调用未定义的函数 process_payment()”

我不是刚刚在 paypal 类中定义了函数吗？我已经阅读了贝宝上的文档，但我无法理解我做错了什么。任何帮助都会很棒。

【问题讨论】：

你不能打电话给process_payment()。您必须使用 paypal 类的实例或将函数设为静态，以便可以从类外部调用。

好的，我现在弄清楚了那部分我从响应中收到一个错误，说“传入的 JSON 请求未映射到 API 请求”有没有办法可以检查或者我应该发布我的代码在这？我用 $paypal = new PayPal(); $result = $paypal->process_payment($request);

【参考方案1】：

函数 process_payment() 是 paypal 类的一部分。要调用它，您必须采用此处列出的方式之一：https://***.com/a/4216347/1715048

【讨论】：

谢谢，我知道了