Logged into the server using putty
1) Go to apache folder:
cd /var/www/html
2) Download the latest version phpmyadmin
wget https://files.phpmyadmin.net/phpMyAdmin/4.6.6/phpMyAdmin-4.6.6-all-languages.zip
Note: By time of writing, 4.6.6 is the latest version. You can get the latest version in https://www.phpmyadmin.net/downloads/
3) Unzip the downloaded files
unzip phpMyAdmin-4.6.6-all-languages.zip
4) Rename the folder
mv phpMyAdmin-4.6.6-all-languages/phpMyAdmin-4.6.6-all-languages
5) Remove the zip file
rm -rf phpMyAdmin-4.6.6-all-languages.zip
Now you can access the phpmyadmin by http://yourwebsite.com/phpmyadmin