Detecting if an IP address is in a certain range in PHP
Written by Wim Godden's professional blog
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on Dec. 12, 2021
First published on the Cu.be blog : link If you ever need to detect whether an IP address (let’s say 192.168.0.2) is inside a certain IP range/subnet (let’s say 192.168.0.0/24), you can use the following code in PHP : /** * Check IPv4 address is within a range * * @param string $ip A valid IPv4 add…