PHPMyadmin is a web front end to manage MySQL databases. It can be installed on the same server as the database or on a separate server.
Step 1: Open a Linux command line terminal (CLI)
Login as root or administrator.
Step 2: Increase the software repository with rpmforge
Browse for the packages and download from http://packages.sw.be
Select the 64bit version if your machine supports it.
Install the keys from DAG.
rpm --import http://apt.sw.be/RPM-GPG-KEY.dag.txt
Install the rpmforge files to access the repository.
rpm -i rpmforge-release-0.5.2-2.el6.rf.*.rpm
Refer to http://wiki.centos.org/AdditionalResources/Repositories/RPMForge/ for details
Step 3: Install phpmyadmin
yum --enablerepo=rpmforge install phpmyadmin
Step 4: Using a web browser point to the server installed with phpmyadmin.
You should be able to see the main page of phpmyadmin.