src/DSN.php
protected function parseParameters($params)
    {
        $parameters = explode('&', $params);

        foreach ($parameters as $parameter) {
            $kv = explode('=', $parameter, 2);
            $this->parameters[$kv[0]] = isset($kv[1]) ? $kv[1] : null;
        }

        return '';
    }
protected function parseParameters($params)
    {
        $parameters = explode('&', $params);

        foreach ($parameters as $parameter) {
            $kv = explode('=', $parameter, 2);
            $this->parameters[$kv[0]] = isset($kv[1]) ? $kv[1] : null;
        }

        return '';
    }
@param string $params

@return string