Cake\Database\Connection::__construct PHP Method

    public function __construct($config)
    {
        $this->_config = $config;
        $driver = '';
        if (!empty($config['driver'])) {
            $driver = $config['driver'];
        }
        $this->driver($driver, $config);
        if (!empty($config['log'])) {
            $this->logQueries($config['log']);
        }
    }