sql查询在412条记录后停止搜索[重复]

Question

我已经为我的自定义网站构建了一个简单的登录系统，我在我的数据库中创建了一个表，我在 phpmyadmin 中存储了用户名和密码，现在我意识到在 412 记录之后，sql 查询无法找到用户名和密码的匹配项。我正在尝试搜索整个表格，但它就停在那里。

``
// Define $username and $password
$username = $_POST['username'];
$password = $_POST['password'];
// mysqli_connect() function opens a new connection to the MySQL server.
$conn = mysqli_connect("******", "*******", "*******", "********");
// SQL query to fetch information of registered users and finds user match.
$query = "SELECT username, password from login where online=1 AND username='" . $username . "' AND password='" . $password . "' LIMIT 1";
// To protect MySQL injection for Security purpose
$stmt = $conn->prepare($query);
$stmt->bind_param("ss", $username, $password);
$stmt->execute();
$stmt->bind_result($username, $password);
$stmt->store_result();
if($stmt->fetch()){ //fetching the contents of the row {
$_SESSION['login_user'] = $username; // Initializing Session
header("location: user_profile"); // Redirecting To Profile Page
}
``

Answer 1

尝试将您的$query 更改为$online=1; $query = 'SELECT username, password from login where online=? AND username =? AND password=? LIMIT 1'; $stmt = $conn->prepare($query); $stmt->bind_param("iss", $online,$username, $password);，看看会发生什么。