php域名授权系统源码

<?php
// 用户认证函数
function authenticateUser($username, $password) {
    // 连接数据库
    $conn = new mysqli("localhost", "username", "password", "database");
    
    // 查询用户信息
    $sql = "SELECT * FROM users WHERE username = '$username' AND password = '$password'";
    $result = $conn->query($sql);
    
    if ($result->num_rows > 0) {
        return true;
    } else {
        return false;
    }
}

// 权限检查函数
function checkPermission($username, $resource) {
    // 连接数据库
    $conn = new mysqli("localhost", "username", "password", "database");
    
    // 查询用户权限
    $sql = "SELECT * FROM permissions WHERE username = '$username' AND resource = '$resource'";
    $result = $conn->query($sql);
    
    if ($result->num_rows > 0) {
        return true;
    } else {
        return false;
    }
}

// 示例使用
$username = $_POST['username'];
$password = $_POST['password'];
$resource = $_GET['resource'];

if (authenticateUser($username, $password)) {
    if (checkPermission($username, $resource)) {
        echo "Access granted!";
    } else {
        echo "Permission denied!";
    }
} else {
    echo "Authentication failed!";
}
?>