How can PHP, Apache, and MySQL be integrated to create a secure authentication system for a WLAN network?

To create a secure authentication system for a WLAN network using PHP, Apache, and MySQL, you can utilize PHP to handle user authentication, Apache to restrict access to certain network resources, and MySQL to store user credentials securely. By integrating these technologies, you can ensure that only authorized users can access the network. 

<?php
session_start();

// Check if user is logged in
if(!isset($_SESSION['loggedin'])){
    header('Location: login.php');
    exit;
}

// Code to connect to MySQL database and validate user credentials
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database";

$conn = new mysqli($servername, $username, $password, $dbname);

if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

// Check user credentials from MySQL database
$username = $_POST['username'];
$password = $_POST['password'];

$sql = "SELECT * FROM users WHERE username='$username' AND password='$password'";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    $_SESSION['loggedin'] = true;
} else {
    header('Location: login.php');
    exit;
}

$conn->close();
?>

Keywords

PHP Apache MySQL secure authentication WLAN network

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