IP Address Resolution

[SetoKaiba]

I am not sure if PHP has a function to support this, *Searched PHP.net for it* Does anyone know a very efficient way of doing IP Resolution without going away from PHP/Javascript? (When I mean IP Resolution I mean take in an IP Address, output the lookup, which is like, nyc.rr.1.1.1.1)

 

[Moonspell]

yes it does, but it is not good practice and does (i have found) slow down the server as it processes the requests.

 

[KarveR]

2 functions here I think:

$hostname = gethostbyaddr($_SERVER['REMOTE_ADDR']);
  
echo $hostname;

$ip = gethostbyname('[URL unfurl="true"]www.example.com');[/URL]

echo $ip;

can be found here :
gethostbyname and gethostbyaddr


______________________________________________________________________
There's no present like the time, they say. - Henry's Cat.

 

[ingresman]

work backwards as well i.e. see if the ip of the hostname you get back is the same as the source one (or at least in the possible list of address you get back)