<?php
/**
* DCHK - PHP Class to check if a domain name exists or is available
*
* Tested and working on PHP 4.3.2 and higher
*
* LICENSE: This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License v2 as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* @author Giulio Bai <[email protected]>
* @copyright (C)2007 Giulio Bai - GNU GPL
* @license http://www.gnu.org/licenses/gpl.html GNU General public License
* @version 1.0
* @link http://hewle.com
*/
/**
* A class to check the presence of a domain name, having any extension.
*
* Example of use (1):
* The following code will check for the domain name example.com and, if available,
* will return the link to the registration through godaddy.com
* You can change the server used to check domains availability and the site
* from where buy the domain name by specifing them in the method call.
* <code>
* include_once('dchk.php');
*
* $free = new DCHK();
* if($free->check_domain("example.com"))
* // domain available
* else
* // Domain already registered!
* </code>
*
* Example of use (2):
* Form to check domain names
* <code>
* <?php
* if (isset($_POST['submit'])) {
* $domain = $_POST['domain'];
* $ext = $_POST['extension'];
* $full_name = $domain . '.' . $ext;
*
* include_once('dchk.php');
*
* $free = new DCHK();
* if($free->check_domain("example.com, , , 1")) // Prints the register link also
* } else {
* <form>
* Check for a domain name:
* <input type="text" name="domain" />
* <select name="extension">
* <option value="com">.com</option>
* <option value="org">.net</option>
* <option value="net">.org</option>
* <option value="biz">.biz</option>
* </select>
* <br />
* <input type="submit" name ="submit" value="Check now!"/>
* </form>
* ?>
* }
* </code>
*
* @author Giulio Bai <[email protected]>
* @copyright (C)2007 Giulio Bai
* @license http://www.gnu.org/licenses/gpl.html GNU General Public License
* @version 1.0
* @link http://hewle.com
*/
class DCHK
{
/**
* Server from which check the domain availability.
*
* @var string
*/
var $server = "whois.networksolutions.com";
/**
* Port to access the server
*
* @var int
*/
var $port = 43;
/**
* Registration link. Displayed if the domain is available.
*
* You can replace this link with another one, at your choise, but remember the
* domain name will be added in substitution of '$domain'
*
* @var string
*/
var $reg_link = "http://order.1and1.co.uk/xml/order/domaincheck?__sendingdata=1&__pageflow=Order&multicheck.Domain=$domain";
/**
* No match string. Usually you do not need to modify.
*
* @var string
*/
var $nomatch = "No match for";
/**
* Output of the test.
*
* @var string
*/
var $output = "";
/**
* Checks the domain avaiability and, if specified, prints the result.
*
* @param string $domain the domain to check
* @param string $server the server used for the checking
* @param int $port the port needed to reach the server
* @param bool $print set to 1 if you want the outputs printed
*
* @return bool returns true if the domain is available, false otherwise
*/
function check_domain($domain, $server = $this->server, $port = $this->port, $print = 0)
{
$this->server = $server;
$this->port = $port;
$e = explode(".", $domain);
if (count($e) != 2) return true; // Strange domain name, uh?
$domain = $e[0];
$ext = $e[1];
if(($sc = fsockopen($this->server, $this->port)) == false)
return true;
fputs($sc, "$domain . $ext\n");
while(!feof($sc))
$this->output .= fgets($sc, 128);
fclose($sc);
if (eregi($this->nomatch, $this->output)) {
if ($print)
echo '<a href="' . $this->reg_link .'">Register now ' . $domain . '!</a>';
return true;
} else {
if ($print)
echo 'Sorry, the domain ' . $domain . ' is already registered!';
return false;
}
}
}
?>
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