DNS Validation Demo : DNS Validation « Network « PHP






  1. PHP
  2. Network
  3. DNS Validation

DNS Validation Demo

<html>
<head>
<title> hostname validator </title>
</head>
<body>
<?php
$hostname = "www.java2s.com";

if (!isset($hostname)) {
   die("Hostname value wasn't properly submitted. Retry.");
}
                           
if(empty($hostname)){
   die("Hostname field was left blank ! Retry."); 
}
echo "<b>". $hostname ."</b> ";
                           
if(checkdnsrr($hostname)) {
    echo "has a valid MX record !<br>";
}else{
    die("does not exist");
}
?>
</body>
</html>








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