Question

How to check DNS validation in PHP

Answer 1

$hostname = "www.seek4info.com";

if (!isset($hostname)) 
   die("\$hostname variable is not set");
                           
if (empty($hostname))
   die("\$hostname variable is empty");

echo $hostname . " - ";
                           
if (checkdnsrr($hostname)) 
    echo "has a valid MX record";
else
    die("is not exist");

 
/*
run:

www.seek4info.com - has a valid MX record

*/

 

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