include my/path/to/core/database.php'; //it's the CI database file

        $database = DatabaseManager::initDatabase();

        $connection_options = array(
            'driver' => 'pdo_mysql',
            'user' => $database->getUsername(),
            'password' => $database->getPassword(),
            'host' => $database->getHostname(),
            'dbname' => $database->getDatabase(),
            'charset' => $database->getCharset(),
            'driverClass' => new MY_Driver()
        );