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  • 获取IP地址的五种方法

    <?php                                                                                                                               
    //方法1:

    $ip = $_SERVER["REMOTE_ADDR"];
    echo $ip;

    //方法2:
    $user_IP = ($_SERVER["HTTP_VIA"]) ? $_SERVER["HTTP_X_FORWARDED_FOR"] : $_SERVER["REMOTE_ADDR"];
    $user_IP = ($user_IP) ? $user_IP : $_SERVER["REMOTE_ADDR"];
    echo $user_IP;

    //方法3:
    function getRealIp()
    {
        $ip=false;
        if(!empty($_SERVER["HTTP_CLIENT_IP"])){
            $ip = $_SERVER["HTTP_CLIENT_IP"];

        }

    if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
            $ips = explode (", ", $_SERVER['HTTP_X_FORWARDED_FOR']);
            if ($ip) { array_unshift($ips, $ip); $ip = FALSE; }
            for ($i = 0; $i < count($ips); $i++) {
                if (!eregi ("^(10│172.16│192.168).", $ips[$i])) {
                    $ip = $ips[$i];
                    break;
                }
            }
        }
        return ($ip ? $ip : $_SERVER['REMOTE_ADDR']);
    }
    echo getRealIp();

    //方法4:
    if ($HTTP_SERVER_VARS["HTTP_X_FORWARDED_FOR"])
    {
        $ip = $HTTP_SERVER_VARS["HTTP_X_FORWARDED_FOR"];
    }
    elseif ($HTTP_SERVER_VARS["HTTP_CLIENT_IP"])
    {
        $ip = $HTTP_SERVER_VARS["HTTP_CLIENT_IP"];
    }
    elseif ($HTTP_SERVER_VARS["REMOTE_ADDR"])
    {
        $ip = $HTTP_SERVER_VARS["REMOTE_ADDR"];
    }
    elseif (getenv("HTTP_X_FORWARDED_FOR"))
    {
        $ip = getenv("HTTP_X_FORWARDED_FOR");
    }

    elseif (getenv("HTTP_CLIENT_IP"))
    {
        $ip = getenv("HTTP_CLIENT_IP");
    }
    elseif (getenv("REMOTE_ADDR"))
    {
        $ip = getenv("REMOTE_ADDR");
    }
    else
    {
        $ip = "Unknown";
    }
    echo $ip ;

    //方法5:
    if(getenv('HTTP_CLIENT_IP')) {
        $onlineip = getenv('HTTP_CLIENT_IP');
    } elseif(getenv('HTTP_X_FORWARDED_FOR')) {
        $onlineip = getenv('HTTP_X_FORWARDED_FOR');
    } elseif(getenv('REMOTE_ADDR')) {
        $onlineip = getenv('REMOTE_ADDR');
    } else {
        $onlineip = $HTTP_SERVER_VARS['REMOTE_ADDR'];
    }
    echo $onlineip;  
    ?>
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  • 原文地址:https://www.cnblogs.com/8834760y/p/5853011.html
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