<?php
if(!function_exists('filter_var')) die('filter_var not available');
foreach(array(
'', 'x', ' ', '0.0.0.0', '255.255.255.255', // Some bad IP
'127.0.0.1', // localhost
'10.0.0.0', '192.168.0.1', 'fe80::414a:a44e:53f2:e694%21', 'fe80::414a:a44e:53f2:e694', // Private IP addresses
'8.8.8.8', '88.149.1.2', // Good IPv4
'2607:f0d0:1002:51::4', '2001:4860:b002::68', '2001:0db8:85a3:0042:1000:8a2e:0370:7334', // Good IPv6
) as $ip) {
echo "'$ip' => "; var_dump(filter_var($ip, FILTER_FLAG_IPV6));
}
preferences:
74.48 ms | 405 KiB | 6 Q