php判断ip黑名单程序代码实例

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:

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);

}

}

?>

引用片段:

代码如下:

$oBlock_ip = new block_ip();

$oBlock_ip->checkIP();