filter_var FILTER_VALIDATE_IP with ip '0.2.3.4' will return true #11098
Description
Description
The following code:
<?php
$ip = '0.2.3.4'; // replace with the IP address you want to validate
if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)) {
echo "$ip is a valid IP address";
} else {
echo "$ip is not a valid IP address";
}Resulted in this output:
0.2.3.4 is a valid IP address
But I expected this output instead:
not a valid IP address
I check this code on https://onlinephp.io/c/b1510
I think that '0.2.3.4' shouldn't be a valid ip address with 0 in the head.
But the filter_var will return true for this error ip
PHP Version
8.2.5
Operating System
No response