thinkphp获取用户ip

最新推荐文章于 2023-05-13 09:31:09 发布

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最新推荐文章于 2023-05-13 09:31:09 发布

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本文介绍了一种通过PHP脚本获取客户端真实IP地址的方法。该方法依次检查HTTP_CLIENT_IP、HTTP_X_FORWARDED_FOR及REMOTE_ADDR等环境变量，确保即使在网络代理情况下也能准确获取用户的实际IP地址。

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//获取用户真实IP 
function 
getIp() { 
    if (getenv("HTTP_CLIENT_IP")
&& strcasecmp(getenv("HTTP_CLIENT_IP"),
"unknown")) 
        $ip = 
getenv("HTTP_CLIENT_IP"); 
    else 
        if (getenv("HTTP_X_FORWARDED_FOR")
&& strcasecmp(getenv("HTTP_X_FORWARDED_FOR"),
"unknown")) 
            $ip = 
getenv("HTTP_X_FORWARDED_FOR"); 
        else 
            if (getenv("REMOTE_ADDR")
&& strcasecmp(getenv("REMOTE_ADDR"),
"unknown")) 
                $ip = 
getenv("REMOTE_ADDR"); 
            else 
                if (isset ($_SERVER['REMOTE_ADDR'])
&& $_SERVER['REMOTE_ADDR']
&& strcasecmp($_SERVER['REMOTE_ADDR'],
"unknown")) 
                    $ip = $_SERVER['REMOTE_ADDR'];
                else 
                    $ip = 
"unknown"; 
    return ($ip); 
}