数组中的连接

I am working on enom API Integration.

I am using code that give me output TRUE/FALSE (Boolean).. My following code is working good.

if ($result['YourDomain.co.uk'] == 1) { echo "Domain Avaliable";} else { echo "Domain Already Taken"; }

BUT I want to use Concatenate dynamic values in the array but its not WORKING Please HELP.. Code as following.

$sld = "YourDomain";
$tld = "co.uk";

$dname = $sld.$tld;

if ($result[$dname] == 1) { echo "Domain Avaliable";} else { echo "Domain Already Taken"; } 

use this

$dname = $sld.".".$tld;

you are missing .