PHP Domain availability check

Go to http://www.enom.com/resellers/default.asp?step=1#step1 and sign up for a free resellers account.  You can then use your login/pass to check domain name availability using this script I made:

<?php

// domain check via CURL:

$sld = $_POST['sld'];
$tld = $_POST['tld'];
$url = "http://reseller.enom.com/interface.asp?uid=YOURUIDHERE&pw=YOURPASSHERE&command=check&sld=$sld&tld=$tld&responsetype=text";

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_HTTP_VERSION, 1.0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

// grab URL and pass it to the browser
$serveroutput = curl_exec($ch);
$serveroutput = preg_replace('/(?s)<meta http-equiv="Expires"[^>]*>/i', '', $serveroutput);

// close curl resource, and free up system resources
curl_close($ch);
echo "$extpage\n\n\n";

// watch the magic happen
$myarray = array();
$ex = explode("\n",$serveroutput);
foreach ($ex as $value) {
      if ($pos = strpos($value,"=")) {
            $mykey = substr($value, 0, $pos);
            $myvalue = substr($value, $pos+1);
            $myarray = $myarray + array($mykey => $myvalue);
      }
}
extract($myarray);

echo "<pre>";
print_r ($myarray);

?>

It will return something like:
    [RRPCode] => 211
    [RRPText] => Domain name not available
And you can just check if ($RRPCode==211), or if ($RRPText == "Domain name not available").

This script requires the CURL package to be installed and compiled with PHP.
http://www.php.net/manual/en/ref.curl.php

You can also use sockets, but I recommend the CURL method.
http://www.php.net/manual/en/ref.sockets.php

That's great thanks, but if possible I'd prefer not to rely on someone elses service. Just incase they pull the plug or change the way it works, etc.

I'll use it there's no other alternative, but it just seem like I can't be the only person to have wanted to try this!