PHP script for checking domain name availabilty

Just configured a working script that can help check for the availability of a domain name. All the user needs to do is to enter the domain name and select the extension(s) and the script plugs into a remote checking database that would give a feedback to the script which then displays on the same php page in seconds. I only included extensions for .com, .net, .org, .biz and .info. You may add other input variables too if you want to include them in the query.

Check out the working demo here