config.php

<?php
session_start();

// Database configuration
define('DB_HOST', 'localhost');
define('DB_NAME', 'copywriting_course');
define('DB_USER', 'root');
define('DB_PASS', '');



try {
    $pdo = new PDO("mysql:host=" . DB_HOST . ";dbname=" . DB_NAME, DB_USER, DB_PASS);
    $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
} catch(PDOException $e) {
    die("Connection failed: " . $e->getMessage());
}

// Helper functions
function isLoggedIn() {
    return isset($_SESSION['user_id']);
}

function requireLogin() {
    if (!isLoggedIn()) {
        header('Location: login.php');
        exit();
    }
}

function getUserData($pdo, $user_id) {
    $stmt = $pdo->prepare("SELECT * FROM users WHERE id = ?");
    $stmt->execute([$user_id]);
    return $stmt->fetch(PDO::FETCH_ASSOC);
}
?>