How to ban ip access in php

php method to ban ip access: first create a PHP sample file; then pass "if(stripos($ban,$ip)){die("Your IP Address is:$ip,you're forbiden to...")}" method can prohibit ip access.

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php bans a certain ip or ip address The method of segment access

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

Disable an ip segment as follows:

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