magento2 获取真实IP地址和浏览器/语言

// 浏览器、语言
$this->getLang(substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 4)) . '--' . $this->getUserAgent($_SERVER["HTTP_USER_AGENT"])

//真实ip地址
public function getRealIP() {
        $headers = array ('HTTP_X_FORWARDED_FOR', 'HTTP_X_FORWARDED', 'HTTP_FORWARDED_FOR', 'HTTP_FORWARDED', 'HTTP_VIA', 'HTTP_X_COMING_FROM', 'HTTP_COMING_FROM', 'HTTP_CLIENT_IP' );

        foreach ( $headers as $header ) {
            if (isset ( $_SERVER [$header]  )) {

                if (($pos = strpos ( $_SERVER [$header], ',' )) != false) {
                    $ip = substr ( $_SERVER [$header], 0, $pos );
                } else {
                    $ip = $_SERVER [$header];
                }
                $ipnum = ip2long ( $ip );
                if ($ipnum !== - 1 && $ipnum !== false && (long2ip ( $ipnum ) === $ip)) {
                    if (($ipnum - 184549375) && // Not in 10.0.0.0/8
                        ($ipnum  - 1407188993) && // Not in 172.16.0.0/12
                        ($ipnum  - 1062666241)) // Not in 192.168.0.0/16
                        if (($pos = strpos ( $_SERVER [$header], ',' )) != false) {
                            $ip = substr ( $_SERVER [$header], 0, $pos );
                        } else {
                            $ip = $_SERVER [$header];
                        }
                    return $ip;
                }
            }

        }
        return $_SERVER ['REMOTE_ADDR'];
    }


    /**
      *方法二
     * @return string
     */
    public function getIpAdress()
    {
        $ipaddress = '';
        if ($this->request->getServer('HTTP_CLIENT_IP')) {
            $ipaddress = $this->request->getServer('HTTP_CLIENT_IP');
        } else if ($this->request->getServer('HTTP_X_FORWARDED_FOR')) {
            $ipaddress = $this->request->getServer('HTTP_X_FORWARDED_FOR');
        } else if ($this->request->getServer('HTTP_X_FORWARDED')) {
            $ipaddress = $this->request->getServer('HTTP_X_FORWARDED');
        } else if ($this->request->getServer('HTTP_FORWARDED_FOR')) {
            $ipaddress = $this->request->getServer('HTTP_FORWARDED_FOR');
        } else if ($this->request->getServer('HTTP_FORWARDED')) {
            $ipaddress = $this->request->getServer('HTTP_FORWARDED');
        } else if ($this->request->getServer('REMOTE_ADDR')) {
            $ipaddress = $this->request->getServer('REMOTE_ADDR');
        } else {
            $ipaddress = 'UNKNOWN';
        }

        return $ipaddress;
    }

    public function getUserAgent($agent) {
        if(strpos($agent,"MSIE 8.0"))
            return "Internet Explorer 8.0";
        else if(strpos($agent,"MSIE 7.0"))
            return "Internet Explorer 7.0";
        else if(strpos($agent,"MSIE 6.0"))
            return "Internet Explorer 6.0";
        else if(strpos($agent,"Firefox/3"))
            return "Firefox 3";
        else if(strpos($agent,"Firefox/2"))
            return "Firefox 2";
        else if(strpos($agent,"Chrome"))
            return "Google Chrome";
        else if(strpos($agent,"Safari"))
            return "Safari";
        else if(strpos($agent,"Opera"))
            return "Opera";
        else return $agent;
    }

    public function getLang($lang) {
        if (preg_match("/zh-c/i", $lang))
            return "简体中文";
        else if (preg_match("/zh/i", $lang))
            return "繁體中文";
        else if (preg_match("/en/i", $lang))
            return "English";
        else if (preg_match("/fr/i", $lang))
            return "French";
        else if (preg_match("/de/i", $lang))
            return "German";
        else if (preg_match("/jp/i", $lang))
            return "Japanese";
        else if (preg_match("/ko/i", $lang))
            return "Korean";
        else if (preg_match("/es/i", $lang))
            return "Spanish";
        else if (preg_match("/sv/i", $lang))
            return "Swedish";
        else return $lang;
    }