PHP and QQ interface docking practice: realizing online payment function

PHP and QQ interface docking practice: realizing online payment function

QQ payment is a convenient and fast online payment method. Many websites hope to integrate QQ payment function to provide users with more payment options. . This article will introduce how to use PHP language to connect with the QQ interface to realize the online payment function.

1. Preparation

To use the QQ payment function, you first need to apply for a QQ payment merchant number and obtain the merchant number and key. If you don’t have a merchant number yet, you can go to the official QQ payment website to apply.

2. Introduce QQ Payment SDK

Next, you need to introduce the QQ Payment SDK. You can find the corresponding SDK on the QQ Payment official website and download it to the local project. Create a QPay folder in your project and put the SDK files into it.

3. Configuration parameters

Before connecting the interfaces, you need to configure parameters. Create a config.php file in the project and configure parameters such as merchant number and key.

<?php
// 商户号和密钥
define('MCH_ID', 'your_mch_id');
define('KEY', 'your_key');
// 回调地址
define('NOTIFY_URL', 'http://www.example.com/notify.php');
?>

4. Generate signature

Before communicating with the QQ payment interface, the request parameters need to be signed to ensure the validity of the request. Create a utils.php file in the project to implement the signature generation function.

<?php
function generateSign($params)
{
    ksort($params); // 对参数按照键名排序
    $string = '';
    foreach ($params as $key => $value) {
        $string .= $key . '=' . $value . '&';
    }
    $string .= 'key=' . KEY; // 加上密钥
    $sign = strtoupper(md5($string)); // 生成签名

    return $sign;
}
?>

5. Request payment

Next, implement the interface for requesting payment. Create a pay.php file in the project and write code to implement the function of requesting payment.

<?php
require_once('QPay/QPay.php');
require_once('utils.php');

// 获取订单号和金额
$orderNo = $_POST['order_no'];
$amount = $_POST['amount'];

// 构建请求参数
$params = array(
    'mch_id' => MCH_ID,
    'nonce_str' => uniqid(),
    'out_trade_no' => $orderNo,
    'total_fee' => $amount,
    'notify_url' => NOTIFY_URL,
    'trade_type' => 'NATIVE',
);

// 生成签名
$params['sign'] = generateSign($params);

// 发起支付请求
$pay = new QPay();
$result = $pay->unifiedOrder($params);

// 处理支付结果
if ($result['return_code'] == 'SUCCESS' && $result['result_code'] == 'SUCCESS') {
    // 获取支付二维码
    $codeUrl = $result['code_url'];
    // 显示支付二维码等待扫码支付
    echo '<img src="' . $codeUrl . '" alt="Pay with QQ">';
} else {
    // 支付失败，显示错误信息
    echo $result['return_msg'];
}
?>

6. Processing callbacks

When the user completes the payment, QQ Payment will notify the payment result to the preset callback address. Create a notify.php file in the project and write code to process the payment results.

<?php
require_once('QPay/QPay.php');
require_once('utils.php');

// 获取通知数据
$data = file_get_contents('php://input');

// 将XML数据转换为数组
$xml = simplexml_load_string($data, 'SimpleXMLElement', LIBXML_NOCDATA);
$json = json_encode($xml);
$data = json_decode($json, true);

// 验证签名
$sign = $data['sign'];
unset($data['sign']);
$validSign = generateSign($data);
if ($sign !== $validSign) {
    // 签名验证失败，可以在此进行日志记录或其他处理
    echo '签名验证失败';
    exit;
}

// TODO: 处理支付结果

echo '成功接收到支付结果通知';
?>

The above are the general steps for using PHP language and QQ interface to implement online payment functions. By configuring parameters, generating signatures, initiating payment requests and processing callbacks, you can achieve docking with QQ Payment. I hope this article can be helpful to developers who need to integrate QQ payment functions.

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