Matching IPv6 address to a CIDR subnet

Question

Is there a good way to match an IPv6 address to an IPv6 subnet using CIDR notation? What I am looking for is the IPv6 equivalent to this: Matching an IP to a CIDR mask in PH

Answer 1

Basically http://www.phpclasses.org/browse/file/70429.html

To use it, simply call

$cidr = new CIDR();
$cidr->match($ipv6, $ipv6_in_cidr);

Result is 'Good'.