How to make a certain IP or IP address range inaccessible in PHP

php method to allow access to a certain ip or ip address segment: 1. Disable a single ip, the code is [$ip=$_SERVER["REMOTE_ADDR"]]; 2. Disable the ip segment, the code is [while( $ip[count($ip-1)]!='.')$ip=substr($ip)].

【Related learning recommendations: php graphic tutorial】

How to allow php to access a certain IP or IP address range:

When using it, just:

<?php include("banIP.php");?>

Disable a single IP as follows :

<?php 
//禁用ip地址 
$ip=$_SERVER["REMOTE_ADDR"]; 
$ban=file_get_contents("ban.dat"); 
if(stripos($ban,$ip)) 
{ 
  die("Your IP Address is:$ip,you&#39;re forbiden to view this page!");   
} 
echo "Your IP Address is:$ip,hello!"; 
?>

ban.dat file is as follows:

BEGIN: 
119.184.251.245 
127.0.0.1 
192.168.1.100

The disabled ip segment is as follows:

<?php 
//禁用ip地址 
$ip=$_SERVER["REMOTE_ADDR"]; 
while($ip[count($ip-1)]!=&#39;.&#39;)$ip=substr($ip,1, -1); //整理出ip段 
$ban=file_get_contents("ban.dat"); 
if(stripos($ban,$ip)) 
{ 
  die("U&#39;re forbiden to view this page!");   
} 
echo "Hello!"; 
?>

Related learning recommendations: php programming (video )

The above is the detailed content of How to make a certain IP or IP address range inaccessible in PHP. For more information, please follow other related articles on the PHP Chinese website!