Install the epel repo for CentOS  and type:

1

yum install phpmyadmin

Accept the packages it needs to pull as deps from the EPEL repo and you have a working CentOS phpMyAdmin install.

To access phpMyAdmin on CentOS enter:

https://localhost/phpmyadmin

You will be prompted for auth the default password for phpMyAdmin on CentOS is the mysql root credentials, so to login use your mysql username and password for root (or another account).