About Whois System searching websites information

I want to install whois system in my website in which my visitors can search other websites' information.I want to have php source code of it.Is it free of charge? What is the official website of WHOIS??!thx~

official whois site.. hmm im not sure that something like that exist.

and for that script
try at:
http://forums.xisto.com/no_longer_exists/
im sure that i saw there one.. use search.

There is no official WHOIS site, as far as I know. Also, I don't know if you can make a PHP script showing WHOIS information...

I believe this is what you're looking for

http://www.web-development-blog.com/php-whois-script/

Found initially on Codebeach.com

If you havent been to codebeach.com .. check it out.

( I dont know PHP so I didnt check to see if it's exactly what you needed or not.. I didnt see a demo of it on the Codebeach site either.. but I'm sure it's worth a look at least)

=)

Whois information can be accessed from whoever the official authority over that particular TLD is. For example, VeriSign Global Registry Servers controls the .COM and .NET top-level domains, so you would access their whois servers to retrieve a whois record for any .COM domain name (such as Xisto.com).

Note that whois servers operate on port 43, so you would need to connect, in this example, to whois.verisign-grs.com:43 to retrieve a whois record. After connection, all you need to send to the server is the domain name followed by CR+LF (\r\n or chr(13).chr(10)), and the whois server will return the record if the domain exists (or will inform you if it doesn't).

You will need to know a little about socket coding to access a whois records, regarldess of which programming language you wish to do it in.

Here is an example of retrieving a whois record. I quickly constructed this while writing this post, and haven't tested it - theoretically, at least, it should work.

<?phpfunction whois_record( $domain_name, $whois_server = 'whois.verisign-grs.com' ) {  if( !($socket = @fsockopen($whois_server,43) ) {    die('Could not connect to whois server.');  }  // Note that the '=' symbol means the domain name is explicit, and instructs the whois server to return a result for that domain name only, not for other possible matches (e.g. try 'google.com' without the equals symbol).  fputs($socket, "=$domain_name\r\n");  $whois_record = '';  while( !feof($socket) ) {    $whois_record .= fgets($socket,1024);  }  fclose($socket);  return $whois_record;}?>

Er, that's VeriSign Global Registry Services. Typing mistake, sorry.