| private expandIPv6 ( string $ip ) : string | ||
| $ip | string | For instance 2a00:1b60:1011::1338 |
| return | string | 2a00:1b60:1011:0000:0000:0000:0000:1338 |
private function expandIPv6($ip)
{
// Convert to in_addr an unpack as hex
$hex = strtolower(bin2hex(inet_pton($ip)));
// Inject colons
return substr(preg_replace('/([a-f0-9]{4})/', '$1:', $hex), 0, -1);
}