How to block certain Ip ranges via ip2long in php - php

Question

Lets assume I have the following IP ranges that I want to block
89.96.53.158 and 89.96.53.189
This how am trying to implement it.
My questions: is it the best way to do it as per code below. Is the coding below right for it
$ip = sprintf('%u', ip2long($_SERVER['REMOTE_ADDR']));
$start_ip = sprintf('%u', ip2long("89.96.53.158"));
$end_ip = sprintf('%u', ip2long("89.96.53.189"));
// stop only ip range between 89.96.53.158 - 89.96.53.189
if ($ip >= $start_ip && $ip <= $end_ip) {
echo "you cannot access our site";
exit();
}
can I also achieve that using strpos() functions

Answer 1

Yes I figured out another way to do it with strpos() method
if(strpos($_SERVER['REMOTE_ADDR'], "89.96") === 0)
{
echo "you cannot access our site";
exit();
}
If you notice, the === operator makes sure that the 89.96 is at the beginning of the IP address.
This means that you can specify as much of the IP address as you want, and it will block no matter what numbers come after it.