Method System.gethostbyaddr()

Method gethostbyaddr: array(string|array(string)) gethostbyaddr(string addr)
Description: Returns an array with information about the specified IP address.
Returns: The returned array contains the same information as that returned by gethostbyname() .
Note: This function only exists on systems that have the gethostbyaddr(2) or similar system call.
See also: gethostbyname()