How to ban ip segment in php

php method to disable ip segments: 1. Disable a single ip, the code is [$ip=$_SERVER["REMOTE_ADDR"];]; 2. Disable the ip segment, the code is [$ip=$_SERVER[ "REMOTE_ADDR"];].

How to ban ip segment in php:

This article describes the example of php banning access to a certain ip or ip address segment The method is shared with everyone for your reference. The specific analysis is as follows:

Because I haven’t studied Apache and nginx in depth yet, I wrote a small program in PHP that can disable addresses

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'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

Disable an IP segment as follows:

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

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