<?php
// Check if the password is correct
$correctPassword = "no password"; // Replace with your actual password

if ($_POST['password'] === $correctPassword) {
    // Password is correct, serve the protected content
    header("Location: https://www.math.fsu.edu/~zhang/spring_2023_nla/spring_2023_nla.html");
    exit;
} else {
    // Password is incorrect, show an error message
    echo "Incorrect password. Please try again.";
}
?>