php 会员cms管理系统

// 生成验证码
session_start();
$code = rand(1000, 9999);
$_SESSION['captcha'] = $code;

// 验证验证码
if ($_POST['captcha'] != $_SESSION['captcha']) {
    echo "验证码错误";
    exit;
}

// 检查会员权限
$user_id = $_SESSION['user_id'];
$sql = "SELECT * FROM user_permissions WHERE user_id = $user_id";
$result = mysqli_query($conn, $sql);
$row = mysqli_fetch_assoc($result);

if ($row['permission_level'] < required_permission_level) {
    echo "权限不足";
    exit;
}

// 更新会员信息
$user_id = $_SESSION['user_id'];
$name = $_POST['name'];
$email = $_POST['email'];

$sql = "UPDATE users SET name = '$name', email = '$email' WHERE id = $user_id";
if (mysqli_query($conn, $sql)) {
    echo "更新成功";
} else {
    echo "更新失败：" . mysqli_error($conn);
}