Domain PHP Whois help

[vick22]

Hello,

I a  newbie in php.

 

I just wrote a simple whois to show me if the domain is registered or not but I am not able to get the desired results. Where exactly have i gone wrong?

 

I am able to successfully whois on domain of country specific TLD when the give output as "Not Available" but i fail on .com for some reason. Not sure why? Can someone help me.

 

<?php 

 

 

$foo = system('whois justtestdomain.com');

if(strstr($foo, 'No match for domain'))

{

  echo "Not Available";

}

else {

echo "Available!";

}

 

?>