PHP의 OAuth: 안전한 모바일 결제 시스템 만들기

pecl install oauth

extension=oauth.so

<?php
// 客户端信息
$client_id = "your_client_id";
$client_secret = "your_client_secret";

// 获取用户输入的用户名和密码
$username = $_POST['username'];
$password = $_POST['password'];

// 调用认证服务器的接口进行身份验证
$url = "http://oauth.example.com/token";

$params = array(
    'grant_type' => 'password',
    'client_id' => $client_id,
    'client_secret' => $client_secret,
    'username' => $username,
    'password' => $password
);

$options = array(
    'http' => array(
        'header' => "Content-Type: application/x-www-form-urlencoded
",
        'method' => "POST",
        'content' => http_build_query($params),
    ),
);

$context = stream_context_create($options);
$response = file_get_contents($url, false, $context);
$result = json_decode($response, true);

// 检查是否成功获取访问令牌
if(isset($result['access_token'])){
    // 保存访问令牌到会话中
    session_start();
    $_SESSION['access_token'] = $result['access_token'];

    // 跳转到支付页面
    header("Location: payment.php");
    exit();
}
else{
    // 身份验证失败，返回登录页面
    header("Location: login.php?error=1");
    exit();
}
?>

<?php
// 检查用户是否已登录
session_start();
if(empty($_SESSION['access_token'])){
    header("Location: login.php");
    exit();
}

// 使用访问令牌从支付服务器获取用户的支付信息
$url = "http://payment.example.com/payments";
$access_token = $_SESSION['access_token'];

$options = array(
    'http' => array(
        'header' => "Authorization: Bearer ".$access_token."
",
        'method' => "GET",
    ),
);

$context = stream_context_create($options);
$response = file_get_contents($url, false, $context);
$result = json_decode($response, true);

// 显示用户的支付信息
if(isset($result['payments'])){
    foreach($result['payments'] as $payment){
        echo "支付ID：".$payment['id']."<br>";
        echo "支付金额：".$payment['amount']."<br>";
        echo "支付状态：".$payment['status']."<br><br>";
    }
}

// 显示支付表单
echo '
<form action="process_payment.php" method="POST">
    <label for="amount">支付金额：</label>
    <input type="number" name="amount" id="amount" min="0" step="0.01" required><br><br>
    <input type="submit" value="支付">
</form>
';
?>