php取得客户端信息类

<?php

/**
 *
 * 根据sina api获取用户的IP地址及地理信息
 * eg: Guest::Instance()->getBrowser();
 *
 */
class Guest
{
	private static $_instance;
    private $ipUrl = 'http://1212.ip138.com/ic.asp';
    private $ipApiUrl = 'http://int.dpool.sina.com.cn/iplookup/iplookup.php?ip=';

    /**
     * 单例模式
     * @return map
     */
    public static function Instance()
    {
        if (!self::$_instance instanceof self) {
            self::$_instance = new self;
        }
        return self::$_instance;
    }

    //获得访客浏览器类型
    function getBrowser()
    {
        if (!empty($_SERVER['HTTP_USER_AGENT'])) {
            $br = $_SERVER['HTTP_USER_AGENT'];
            if (preg_match('/MSIE/i', $br)) {
                $br = 'MSIE';
            } elseif (preg_match('/Firefox/i', $br)) {
                $br = 'Firefox';
            } elseif (preg_match('/Chrome/i', $br)) {
                $br = 'Chrome';
            } elseif (preg_match('/Safari/i', $br)) {
                $br = 'Safari';
            } elseif (preg_match('/Opera/i', $br)) {
                $br = 'Opera';
            } else {
                $br = 'Other';
            }
            return $br;
        } else {
            return "获取浏览器信息失败！";
        }
    }

    //获得访客浏览器语言
    function getLang()
    {
        if (!empty($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
            $lang = $_SERVER['HTTP_ACCEPT_LANGUAGE'];
            $lang = substr($lang, 0, 5);
            if (preg_match("/zh-cn/i", $lang)) {
                $lang = "简体中文";
            } elseif (preg_match("/zh/i", $lang)) {
                $lang = "繁体中文";
            } else {
                $lang = "English";
            }
            return $lang;

        } else {
            return "获取浏览器语言失败！";
        }
    }

    //获取访客操作系统
    function getOs()
    {
        if (!empty($_SERVER['HTTP_USER_AGENT'])) {
            $OS = $_SERVER['HTTP_USER_AGENT'];
            if (preg_match('/win/i', $OS)) {
                $OS = 'Windows';
            } elseif (preg_match('/mac/i', $OS)) {
                $OS = 'MAC';
            } elseif (preg_match('/linux/i', $OS)) {
                $OS = 'Linux';
            } elseif (preg_match('/unix/i', $OS)) {
                $OS = 'Unix';
            } elseif (preg_match('/bsd/i', $OS)) {
                $OS = 'BSD';
            } else {
                $OS = 'Other';
            }
            return $OS;
        } else {
            return "获取访客操作系统信息失败！";
        }
    }

    //获得访客真实ip
    function getIp()
    {
		$ips = array();
		$ip = '';
        if (!empty($_SERVER["HTTP_CLIENT_IP"])) {
            $ip = $_SERVER["HTTP_CLIENT_IP"];
        }
        if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) { //获取代理ip
            $ips = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);
        }
        if ($ip) {
            $ips = array_unshift($ips, $ip);
        }

        $count = count($ips);
        for ($i = 0; $i < $count; $i++) {
            if (!preg_match("/^(10|172\.16|192\.168)\./i", $ips[$i])) { //排除局域网ip
                $ip = $ips[$i];
                break;
            }
        }
        $tip = empty($_SERVER['REMOTE_ADDR']) ? $ip : $_SERVER['REMOTE_ADDR'];
        if ($tip == "127.0.0.1") { //获得本地真实IP
            return $this->get_onlineip();
        } else {
            return $tip;
        }
    }

    //获得本地真实IP  如果有问题http://www.ip138.com/找到iframe更新ipUrl
    function get_onlineip()
    {
        $mip = file_get_contents($this->ipUrl);
        if ($mip) {
            preg_match("/\[.*\]/", $mip, $sip);
            $p = array("/\[/", "/\]/");
            return preg_replace($p, "", $sip[0]);
        } else {
            return "获取IP地址失败";
        }
    }

    //根据ip获得访客所在地地名
    function getAddress($ip = '')
    {
        if (empty($ip)) {
            $ip = $this->getIp();
        }
        $ipadd = file_get_contents($this->ipApiUrl. $ip); //根据新浪api接口获取
        if ($ipadd) {
            $charset = iconv("gbk", "utf-8", $ipadd);
            preg_match_all("/[\x{4e00}-\x{9fa5}]+/u", $charset, $ipadds);

            return $ipadds; //返回一个二维数组
        } else {
            return "地址不存在";
        }
    }
}
?>