📄 host name.php
字号:
<html>
<head>
<title> hostname validator </title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<?php
if (!isset($hostname))
{
die("Hostname value wasnt properly submitted.Retry.");
}
if(empty($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");
}
?>
<br>
To test another hostname<A href="hostname.htm"> click here </a>
<br>
</body>
</html>
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