Question

PHP代码如何放行代理服务器IP

//代理IP直接退出
empty($_SERVER['HTTP_VIA']) or exit('Access Denied');
//防止快速刷新
session_start();
$seconds = '3'; //时间段[秒]
$refresh = '5'; //刷新次数
//设置监控变量
$cur_time = time();
if(isset($_SESSION['last_time'])){
$_SESSION['refresh_times'] += 1;
}else{
$_SESSION['refresh_times'] = 1;
$_SESSION['last_time'] = $cur_time;
}
//处理监控结果
if($cur_time - $_SESSION['last_time'] < $seconds){
if($_SESSION['refresh_times'] >= $refresh){
//跳转至攻击者服务器地址
header(sprintf('Location:%s', 'http://127.0.0.1'));
exit('Access Denied');
}
}else{
$_SESSION['refresh_times'] = 0;
$_SESSION['last_time'] = $cur_time;
}

以上PHP代码是让所有代理IP都拒绝访问，请PHP大神帮忙修改为，放行某个或者多个代理IP访问。

Answer 1

<?php
//授权 IP
$ips = ['119.29.29.29', '8.8.8.8'];
//代理IP直接退出 
empty($_SERVER['HTTP_VIA']) or exit('Access Denied');
//防止快速刷新 
session_start();
$seconds = '3'; //时间段[秒] 
$refresh = '5'; //刷新次数 
//设置监控变量 
$cur_time = time();
if (isset($_SESSION['last_time'])) {
   $_SESSION['refresh_times'] += 1;
} else {
   $_SESSION['refresh_times'] = 1;
   $_SESSION['last_time']     = $cur_time;
}
//处理监控结果 
if ($cur_time - $_SESSION['last_time'] < $seconds) {
   if ($_SESSION['refresh_times'] >= $refresh && ! in_array($getIP, $ips)) {
       //跳转至攻击者服务器地址 
       header(sprintf('Location:%s', '
));
       exit('Access Denied');
   }
} else {
   $_SESSION['refresh_times'] = 0;
   $_SESSION['last_time']     = $cur_time;
}

function getIP() {
   if (getenv('HTTP_CLIENT_IP')) {
       $ip = getenv('HTTP_CLIENT_IP');
   } elseif (getenv('HTTP_X_FORWARDED_FOR')) {
       $ip = getenv('HTTP_X_FORWARDED_FOR');
   } elseif (getenv('HTTP_X_FORWARDED')) {
       $ip = getenv('HTTP_X_FORWARDED');
   } elseif (getenv('HTTP_FORWARDED_FOR')) {
       $ip = getenv('HTTP_FORWARDED_FOR');

   } elseif (getenv('HTTP_FORWARDED')) {
       $ip = getenv('HTTP_FORWARDED');
   } else {
       $ip = $_SERVER['REMOTE_ADDR'];
   }

   return $ip;
}