Performing WHOIS Using PHP

If you need to get the whois information for a specific domain, why not using PHP to do it? The following function take a domain name as a parameter, and then display the whois info related to the domain.

The PHP Code is given below:

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(
 "biz" => "whois.neulevel.biz",
 "com" => "whois.internic.net",
 "us" => "whois.nic.us",
 "coop" => "whois.nic.coop",
 "info" => "whois.nic.info",
 "name" => "whois.nic.name",
 "net" => "whois.internic.net",
 "gov" => "whois.nic.gov",
 "edu" => "whois.internic.net",
 "mil" => "rs.internic.net",
 "int" => "whois.iana.org",
 "ac" => "whois.nic.ac",
 "ae" => "whois.uaenic.ae",
 "at" => "whois.ripe.net",
 "au" => "whois.aunic.net",
 "be" => "whois.dns.be",
 "bg" => "whois.ripe.net",
 "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",
 "cz" => "whois.nic.cz",
 "de" => "whois.nic.de",
 "fr" => "whois.nic.fr",
 "hu" => "whois.nic.hu",
 "ie" => "whois.domainregistry.ie",
 "il" => "whois.isoc.org.il",
 "in" => "whois.ncst.ernet.in",
 "ir" => "whois.nic.ir",
 "mc" => "whois.ripe.net",
 "to" => "whois.tonic.to",
 "tv" => "whois.tv",
 "ru" => "whois.ripn.net",
 "org" => "whois.pir.org",
 "aero" => "whois.information.aero",
 "nl" => "whois.domain-registry.nl"
 );
 
 if (!isset($servers[$ext])){
 die(Error: No matching nic server found!);
 }
 
 $nic_server = $servers[$ext];
 
 $output = ;
 
 // connect to whois server:
 if ($conn = fsockopen ($nic_server, 43)) {
 fputs($conn, $domain." ");
 while(!feof($conn)) {
 $output .= fgets($conn,128);
 }
 fclose($conn);
 }
 else { die(Error: Could not connect to . $nic_server . !); }
 
 return $output;
}

Enjoy!