Whois Arin and php - php

Question

I have a problem with php and whois.arin.net
$whois="whois.arin.net";
$ip="xx.xx.xx.xx";
$sk=fsockopen($whois, 43, $errno, $errstr, 30) or die('Connessione impossibile');
fputs ($sk, $ip."\r\n") or die('Request impossibile');
while (!feof($sk)) {
$info.= fgets ($sk, 2048);
}
$i=explode("\n",$info);
foreach($i as $val){
$descr=explode("\n",$val);
echo $descr[0];
}
The error that appears is
ARIN WHOIS data and services are subject to the Terms of Use
Query terms are ambiguous. The query is assumed to be: n xx-xx-xx-xx
What is the problem?

Answer 1

A very simple PHP whois function that supports ARIN would look like this:
function whois($domain, $server) {
// format input for the specific server
if($server == 'whois.arin.net') {
$domain = "n + $domain";
}
// connect and send whois query
$connection = fsockopen($server, 43, $errno, $errstr, 30);
$request = fputs($connection, $domain . "\r\n");
if(!$connection OR !$request){
return "Error $errno: $errstr.";
}
// get the whois data
$data = '';
while(!feof($connection)){
$data .= fgets($connection);
}
fclose($connection);
return trim($data);
}
Then you can call the function like so:
echo whois('8.8.8.8', 'whois.arin.net');