php限制IP段代码是我在网上搜相关解决方法时搜到的,这个类的makePregIP函数逻辑有点问题,我修改了下可以使用了,这个类得功能是允许白名单中的IP地址访问,如果要实现限制黑名单中的IP地址访问,简单修改下checkIP函数中的代码逻辑就可以了.
使用方法,代码如下:
- $allow_ip = array("192.168.1.1","210.10.2.1-20","222.34.4.*","127.0.0.1");
- $oBlock_ip = new allowIp($allow_ip);
- if( !$oBlock_ip->checkIP() ){
- echo '您的IP为:';
- echo $oBlock_ip->ip;
- exit('禁止访问');
- }
allowIP类文件,代码如下:
- class allowIp {
-
- function __construct($allow_ip){
- if (emptyempty($allow_ip)) {
- return false;
- }
- $this->allow_ip = $allow_ip;
- $this->ip = '';
-
- }
-
- private function makePregIP($str)
- {
- if (strstr($str,"-")) {
-
- $aIP = explode(".",$str);
-
- foreach ($aIP as $k=>$v) {
- if (!strstr($v,"-")) {
- $preg_limit .= $this->makePregIP($v);
- $preg_limit .= ".";
- } 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->allow_ip) {
- $i = 1;
- foreach ($this->allow_ip as $k=>$v) {
- $ipaddres = $this->makePregIP($v);
-
- $ip = str_ireplace(".",".",$ipaddres);
- $ip = str_replace("*","[0-9]{1,3}",$ip);
- $ipaddres = "/".$ip."/";
- $ip_list[] = $ipaddres;
- $i++;
- }
- }
- return $ip_list;
- }
-
- public function checkIP() {
- $iptable = $this->getAllBlockIP();
- $IsJoined = false;
-
- $Ip = $this->get_client_ip();
- $Ip = trim($Ip);
-
- if ($iptable) {
- foreach($iptable as $value) {
- if (preg_match("{$value}",$Ip)) {
- $IsJoined = true;
- break;
- }
- }
- }
-
- if( !$IsJoined ){
- return false;
- }
- return true;
- }
-
- 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";
- $this->ip = $ip;
- return($ip);
- }
- }
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