Surely you are familiar with the term domain name checker, this is usually contained in the website domain and hosting provider. Before you buy a domain name previously had to check whether the domain name would you buy that have been there or not.
The function of this script is to check for the domain (have anyone have or have not already).

DEMO : http://blogexample.co.cc/domainchecker/

An easy way, just need two files for this, here's how made:
Save with the name index.php

And create a file with the name check.php

Download Sample Script "Domain Checker" Click Here
qqqqq

Just Comment. Not Spam!