How to prohibit access to a certain IP or IP address range in php, phpip_PHP tutorial

How to prohibit access to a certain IP or IP address range in php, phpip

The example in this article describes the method of prohibiting access to a certain IP or IP address range in PHP. I would like to share it with you 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
To use just:

<&#63;php include("banIP.php");&#63;>

That’s it

Disable a single IP as follows:

<&#63;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!"; 
&#63;>

ban.dat file is as follows:

BEGIN: 
119.184.251.245 
127.0.0.1 
192.168.1.100 

The disabled IP segments are as follows:

<&#63;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!"; 
&#63;>

I hope this article will be helpful to everyone’s PHP programming design.