Net_CheckIP2
A package to determine if an IP (v4) is valid.
Net_CheckIP2 allows you to validate an IPv4 address. Additionally, using isReserved(), you may check if an IP is from a reserved/private IP space (according to RFC 1918). Using getClass(), you may retrieve the IP's class network (A, B, C currently supported). Net_CheckIP2 is a PHP5 port of the Net_CheckIP package and is almost a drop-in replacement.
beta