If you want to access phpMyAdmin directly from any specific domain, we need to install phpMyAdmin on the separate domain. This method will create you a link to access phpmyadmin directly from your domain (e.g. http://www.yourdomainname.com/PhpMyAdmin).
Follow the steps below to install phpMyAdmin on specific domain:
Step 1:
Download the latest stable version of the PhpMyAdmin software using the below URL.
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https://www.phpmyadmin.net/downloads/
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Step 2: Extract the archive file under the document directory the domain.
Step 3: Rename the extracted phpMyAdmin-4.2.5-english folder to phpMyAdmin so that your URL will look something like this: http://www.yourdomainname.com/PhpMyAdmin.
Step 4: Upload the phpMyAdmin folder into public_html directory of your hosting account and place it at the exact location where you would like to access the software. For example, if you want to access it from http://www.yourdomainname.com/PhpMyAdmin you should place the content of the extracted directory straight under the public_html/PhpMyAdmin folder of cPanel account
You should now be able to access phpMyAdmin directly from your domain.
Step 5: Visit http://yourdomainname.com/phpMyAdmin in your web browser. (Replace www.yourdomainname.com with your actual domain name.) You will be prompted to enter your cPanel user name and password.
Once you have entered your credentials, it should take you straight to phpMyAdmin interface.