我正在尝试创建一个测验网站,其中有一个名为Level的列。我想比较这些级别,并相应地将其发送给他们所提出的问题。这应该是cookie来存储用户进度的功能。
我尝试做fetch_column_assoc,正确选择数据。
if (isset($_POST['login_user'])) {
$username = mysqli_real_escape_string($db, $_POST['username']);
$password = mysqli_real_escape_string($db, $_POST['password']);
if (empty($username)) {
array_push($errors, "Username is required");
}
if (empty($password)) {
array_push($errors, "Password is required");
}
if (count($errors) == 0) {
$password = md5($password);
$query = "SELECT *
FROM users
WHERE username='$username' AND password='$password'";
$results = mysqli_query($db, $query);
if (mysqli_num_rows($results) == 1) {
$_SESSION['username'] = $username;
$_SESSION['success'] = "You are now logged in";
$sql="SELECT Level FROM users";
$result=mysqli_query($sql);
$row=mysqli_fetch_assoc($result);
$sth = "SELECT Level FROM users";
$sth->execute();
$result = $sth->fetchColumn();
if ($result == 1) {
header("location : https://google.co.in");
} elseif ($result == 2) {
header("location : https://www.w3schools.com/");
} else{
}
}else {
array_push($errors, "Wrong username/password combination");
}
}
}
?>
我想访问与用户有关的级别并将其发送到他所在的级别。 请帮忙。 谢谢