کد PHP:
<?php
function whois_query($domain) {
// fix the domain name:
$domain = strtolower(trim($domain));
$domain = preg_replace('#^http:\/\/#i', '', $domain);
$domain = preg_replace('#^www\.#i', '', $domain);
$domain = explode('/', $domain);
$domain = trim($domain[0]);
// split the TLD from domain name
$_domain = explode('.', $domain);
$lst = count($_domain)-1;
$ext = $_domain[$lst];
// You find resources and lists
// like these on wikipedia:
//
// http://de.wikipedia.org/wiki/Whois
//
$servers = array(
'ac' => 'whois.nic.ac',
'ae' => 'whois.uaenic.ae',
'aero' => 'whois.information.aero',
'at' => 'whois.ripe.net',
'au' => 'whois.aunic.net',
'be' => 'whois.dns.be',
'bg' => 'whois.ripe.net',
'biz' => 'whois.neulevel.biz',
'br' => 'whois.registro.br',
'bz' => 'whois.belizenic.bz',
'ca' => 'whois.cira.ca',
'cc' => 'whois.nic.cc',
'ch' => 'whois.nic.ch',
'cl' => 'whois.nic.cl',
'cn' => 'whois.cnnic.net.cn',
'com' => 'whois.internic.net',
'coop' => 'whois.nic.coop',
'cz' => 'whois.nic.cz',
'de' => 'whois.nic.de',
'edu' => 'whois.internic.net',
'fr' => 'whois.nic.fr',
'gov' => 'whois.nic.gov',
'hu' => 'whois.nic.hu',
'ie' => 'whois.domainregistry.ie',
'il' => 'whois.isoc.org.il',
'in' => 'whois.ncst.ernet.in',
'info' => 'whois.nic.info',
'int' => 'whois.iana.org',
'ir' => 'whois.nic.ir',
'mc' => 'whois.ripe.net',
'mil' => 'rs.internic.net',
'name' => 'whois.nic.name',
'net' => 'whois.internic.net',
'nl' => 'whois.domain-registry.nl'
'org' => 'whois.pir.org',
'ru' => 'whois.ripn.net',
'to' => 'whois.tonic.to',
'tv' => 'whois.tv',
'us' => 'whois.nic.us',
);
if (!isset($servers[$ext]) || !in_array($ext, $servers)) {
die('Error: No matching nic server found!');
}
$nic_server = $servers[$ext];
$output = '';
// connect to whois server:
if ($conn = fsockopen ($nic_server, 43)) {
fputs($conn, $domain."\r\n");
while(!feof($conn)) {
$output .= fgets($conn, 128);
}
fclose($conn);
}
else {
die('Error: Could not connect to ' . $nic_server . '!');
}
return $output;
}
?>