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PHP编程:巧妙获得网站访客的真实IP
- WBOYOriginal
- 2016-05-19 14:05:301012browse
在php中要得到访客的ip其实是非常容易的，但是有些人会使用PRoxy这个方法来避开系统得到真实IP。而如果有心人士用来攻击网站，又走proxy的话，这时就可以透过侦测得到访客的真实IP。
而以下程序就可以获得真实IP：
if (!empty($_SERVER['HTTP_CLIENT_IP']))
$ip=$_SERVER['HTTP_CLIENT_IP'];
else if (!empty($_SERVER['HTTP_X_FORWARDED_FOR']))
$ip=$_SERVER['HTTP_X_FORWARDED_FOR'];
else
$ip=$_SERVER['REMOTE_ADDR'];
而以下程序就可以获得真实IP：
if (!empty($_SERVER['HTTP_CLIENT_IP']))
$ip=$_SERVER['HTTP_CLIENT_IP'];
else if (!empty($_SERVER['HTTP_X_FORWARDED_FOR']))
$ip=$_SERVER['HTTP_X_FORWARDED_FOR'];
else
$ip=$_SERVER['REMOTE_ADDR'];
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