Autarky\Database\ConnectionManager::getPdo PHP 메소드

    public function getPdo($connection = null)
    {
        if ($connection === null) {
            $connection = $this->defaultConnection;
        }
        if (isset($this->instances[$connection])) {
            return $this->instances[$connection];
        }
        $config = $this->getConnectionConfig($connection);
        return $this->instances[$connection] = $this->factory->makePdo($config, $connection);
    }