search
Homephp教程php手册php判断ip黑名单程序代码实例

这篇文章主要介绍了php判断ip黑名单程序代码实例,需要的朋友可以参考下

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:

复制代码 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

复制代码 代码如下:


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];$i$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);
}
}
?>

引用片段:

复制代码 代码如下:


$oBlock_ip = new block_ip();
$oBlock_ip->checkIP();

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

Dreamweaver Mac version

Dreamweaver Mac version

Visual web development tools

ZendStudio 13.5.1 Mac

ZendStudio 13.5.1 Mac

Powerful PHP integrated development environment

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.

DVWA

DVWA

Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software