php判断ip黑名单程序代码实例
发布:smiling 来源: PHP粉丝网 添加日期:2020-09-21 11:32:01 浏览: 评论:0
学校的新闻系统要求有些新闻只开放校内ip浏览,于是重写了一个代码来实现此功能,实现后的结果是,只要把允许访问的ip列入ip.txt这个文件中即可,同时支持c类ip,例如:
ip.txt
192.168
211.67.188
211.67.191.25
代码如下:
- /*
- * ip地址黑名单、白名单
- * 判断访客地址的ip是否在ip.txt中,支持c类ip
- * By xhat
- */
- $ip = $_SERVER['REMOTE_ADDR'];
- $ipArray = preg_replace("#rn?|n#","",file('ip.txt'));
- foreach ($ipArray as $ipTest) {
- if (substr_count($ip, $ipTest) != "0") {
- echo "ok"; //执行相关命令
- die();
- }
- }
- ?>
上面大家可以使用代码来骗过了,下面代码进行升级,代码如下:
- <?php
- class block_ip {
- var $Block_ip = array("192.168.1.1","210.10.2.1-20","222.34.4.*");
- function __construct(){
- }
- function __destruct(){
- }
- private function makePregIP($str){
- if (strstr($str,"-")) {
- $aIP = explode(".",$str);
- foreach ($aIP as $k=>$v) {
- if (!strstr($v,"-")) {
- $preg_limit .= makePregIP($v);
- } else{
- $aipNum = explode("-",$v);
- for($i=$aipNum[0];$i<=$aipNum[1];$i++){
- $preg .=$preg?"|".$i:"[".$i;
- }
- $preg_limit .=strrpos($preg_limit,".",1)==(strlen($preg_limit)-1)?$preg."]":".".$preg."]";
- }
- }
- }else{
- $preg_limit .= $str.".";
- }
- return $preg_limit;
- }
- private function getAllBlockIP(){
- if ($this->Block_ip) {
- foreach ($this->Block_ip as $k=>$v) {
- $ipaddres = $this->makePregIP($v->start_ip);
- $ip = str_ireplace(".",".",$ipaddres);
- $ip = str_replace("*","[0-9]{1,3}",$ip);
- $ipaddres = "/".$ip."/";
- $ip_list[] = $ipaddres;
- }
- }
- return $ip_list;
- }
- public function checkIP() {
- $iptable = $this->getAllBlockIP();
- $IsJoined = true;
- //取得用户ip
- $Ip = $this->get_client_ip();
- $Ip = trim($Ip);
- //剔除黑名单中的IP区段
- if ($iptable) {
- foreach($iptable as $value) {
- if (preg_match("{$value}",$Ip)) {
- $IsJoined = false;
- break;
- }
- }
- }
- // 如果在ip黑名单中就执行如下操作
- if( !$IsJoined ){
- echo "IP Error";
- exit;
- }
- }
- private function get_client_ip(){
- 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);
- } //phpfensi.com
- }
- ?>
引用片段:
- $oBlock_ip = new block_ip();
- $oBlock_ip->checkIP();
Tags: php黑名单
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