使用下面的函数可以获取任何域名用户的完整细节

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, $domain."\r\n");          while(!feof($conn)) {              $output .= fgets($conn,128);          }          fclose($conn);      }      else { die('Error: Could not connect to ' . $nic_server . '!'); }          return $output;  }

用法：

<?php  $domain = "http://www.open-open.com";  $result = whois_query($domain);  print_r($result);  ?>