PHP. Руководство по PHP. 2005
inet_ntop
inet_ntop
Description
string inet_ntop (string in_addr)This function converts a 32bit IPv4, or 128bit IPv6 address (if PHP
was built with IPv6 support enabled) into an address family appropriate
string representation. Returns FALSE on failure.
Замечание: Для Windows-платформ
эта функция не реализована.
See also long2ip(),
inet_pton(), and
getservbyport
inet_pton