finger_with

finger.php
<?php 
require ('xajax_core/xajax.inc.php');
$xajax = new xajax();

$xajax->configure('javascript URI', '/');

function get_domain($domain) {
  $pdolist = array('at', 'co.at', 'or.at');    
  foreach ($pdolist as $pdo) {
    $d = $domain.'.'.$pdo;
	  $r = finger($d);	
	  $text = ( $r == 0 ) ? "occupied" : "free" ; 
	  $ret .= sprintf("<br> %s [%s]", $d, $text);
	}
	
  $objResponse = new xajaxResponse();
	$objResponse->assign('domain_label', 'innerHTML', $ret);	
	return $objResponse;
	
}

function finger($domain) {
  $fp = fsockopen('finger.nic.at', 79);
  $domain .= "\n";
  fputs($fp, $domain, strlen($domain));
  $text = fgets($fp);
  fclose($fp);
  $ret = preg_match  ('/NO domain data/', $text) ? 1 : 0;
  return $ret;
}

$req_get_domain =& $xajax->registerFunction('get_domain');
$req_get_domain->setParameter(0, XAJAX_INPUT_VALUE, 'domainname');
$xajax->processRequest();

?>
<html>
<head>
	<title>finger</title>	
	<?php
	$xajax->printJavascript();
  ?>
</head>
<body>
  
	Domain: <input name="domainname" id="domainname" type="text" size="30" maxlength="60" 
	 onkeyup='<?php $req_get_domain->printScript(); ?>;'> 
	<div id="domain_label"></div><br />		
		
</body>
</html>