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)].

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

When using it, just:

Disable a single IP as follows :

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:

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