<?php
/* Class: WhoisDomainQuery
 * Uses PEAR (pear.php.net)
 *
 * <example>
 * <code>
 * $freedomain = new WhoisDomainQuery();
 * $is_free = $freedomain->isAvailable('mureakuha.com');
 * switch ($is_free)
 * {
 *   default:
 *   case -2: echo "TLD not found."; break;
 *   case -1: echo "no dot (.) in address."; break;
 *   case 1: echo "Domain is free!; break;
 *   case 0: echo "Domain in use"; break;
 * }
 * </code>
 * </example>
 *
 * @author Pekka Järvinen
 * @copyright Pekka Järvinen
 */
class WhoisDomainQuery extends Net_Whois
{
  public $resolver;
 
  public $whoisServerList = array(
    "ac.ug" => array("wawa.eahd.or.ug", "No entries found"),
    "biz" => array("whois.biz", "Not found"),
    "com" => array("whois.crsnic.net", "No match for"),
    "co.uk" => array("whois.nic.uk", "No match"),
    "co.ug" => array("wawa.eahd.or.ug", "No entries found"),
    "net" => array("whois.crsnic.net", "No match for"),
    "org" => array(" whois.pir.org", "NOT FOUND"),
    "info" => array("whois.afilias.net", "NOT FOUND"),
    "or.ug" => array("wawa.eahd.or.ug", "No entries found"),
    "ne.ug" => array("wawa.eahd.or.ug", "No entries found"),
    "sc.ug" => array("wawa.eahd.or.ug", "No entries found"),
    "nl"        => array("whois.domain-registry.nl", "not a registered domain"),
    "ro" => array("whois.rotld.ro", "No entries found for the selected"),
    "com.au" => array("whois.ausregistry.net.au", "No data Found"),
    "ca" => array("whois.cira.ca", "AVAIL"),
    "org.uk" => array("whois.nic.uk", "No match"),
    "name" => array("whois.nic.name", "No match"),
    "us" => array("whois.nic.us", "Not Found"),
    "ws" => array("whois.website.ws", "No Match"),
    "be" => array("whois.ripe.net", "No entries"),
    "com.cn" => array("whois.cnnic.cn", "no matching record"),
    "net.cn" => array("whois.cnnic.cn", "no matching record"),
    "org.cn" => array("whois.cnnic.cn", "no matching record"),
    "no" => array("whois.norid.no", "no matches"),
    "se" => array("whois.nic-se.se", "No data found"),
    "nu" => array("whois.nic.nu", "NO MATCH for"),
    "com.tw" => array("whois.twnic.net", "No such Domain Name"),
    "net.tw" => array("whois.twnic.net", "No such Domain Name"),
    "org.tw" => array("whois.twnic.net", "No such Domain Name"),
    "cc" => array("whois.nic.cc", "No match"),
    "nl" => array("whois.domain-registry.nl", "is free"),
    "pl" => array("whois.dns.pl", "No information about"),
    "pt" => array("whois.ripe.net", "No entries found"),
    "fi" => array("whois.ficora.fi", "Domain not found")
  );
 
  public function __construct ()
  {
    $this->resolver = new Net_Whois();
  }

  public function isAvailable ($domain)
  {
    $domain = strtolower($domain);

    if (strstr($domain, '.'))
    {
      $ext = null;
      $found = false;

      foreach ($this->whoisServerList as $tld => $arr)
      {
        $re = '/\.' . preg_quote($tld) . '$/i';
        if (preg_match($re, $domain))
        {
          $found = true;
          $ext = $tld;
          break;
        }
      }

      if ($found)
      {
        $data = $this->resolver->query($domain);
        if (strstr($data, $this->whoisServerList[$ext][1]))
        {
          return 0;
        }
        else
        {
          return 1;
        }
      }
      else
      {
        return -2;
      }

    }
    else
    {
      return -1;
    }
  }

}
?>