```
### 2. Authenticatie Functies (auth/auth_functions.php)
```php
load();
/**
* Get database connection
*/
function getAuthDb() {
static $db = null;
if ($db === null) {
$db = new PDO(
"mysql:host={$_ENV['DB_HOST']};dbname={$_ENV['DB_NAME']}",
$_ENV['DB_USER'],
$_ENV['DB_PASS']
);
$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
}
return $db;
}
/**
* Check if user is logged in
*/
function isLoggedIn() {
return isset($_SESSION['user_id']) && isset($_SESSION['user']);
}
/**
* Get current logged in user
*/
function getCurrentUser() {
return $_SESSION['user'] ?? null;
}
/**
* Check if user has specific role
*/
function hasRole($role) {
if (!isLoggedIn()) {
return false;
}
return $_SESSION['user']['role'] === $role;
}
/**
* Check if user is admin
*/
function isAdmin() {
return hasRole('admin');
}
/**
* Check if user is guest
*/
function isGuest() {
return hasRole('guest');
}
/**
* Require user to be logged in
*/
function requireLogin() {
if (!isLoggedIn()) {
$currentUrl = $_SERVER['REQUEST_URI'];
$redirect = urlencode($currentUrl);
header("Location: /auth/login.php?redirect=$redirect");
exit;
}
}
/**
* Require user to have specific role
*/
function requireRole($role) {
requireLogin();
if (!hasRole($role)) {
http_response_code(403);
echo '
Geen Toegang