require_once $configPath;

if (!defined('DB_HOST') || !defined('DB_NAME') || !defined('DB_USER') || !defined('DB_PASS')) {
    exit("<p style='color:red;'>ERROR: Database constants not defined in config.php.</p>");
}

$pdo = new PDO(
    "mysql:host=" . DB_HOST . ";dbname=" . DB_NAME . ";charset=utf8mb4",
    DB_USER,
    DB_PASS
);