How to set up php ip segment ban

php ip segment ban setting method: first disable a single ip through the "if(stripos($ban,$ip))" method; then use "while($ip[count($ip-1)] !='.')$ip=substr($ip,1, -1);" method can be used to disable the ip segment.

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

When using it, just:

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

To disable a single ip is 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

Disable the IP segment 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!"; 
?>

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