The following rpm is now available in the c4-testing repository: phpMyAdmin-2.7.0-1.c4.noarch.rpm
For security reasons, a phpmyadmin.conf file has been created for /etc/httpd/conf.d/ Currently this restricts phpmyadmin to https, and makes it only available to 127.0.0.1. This forces the user to relax permissions if they require, but should keep a default install reasonably secure.
These are all available for install via "yum --enablerepo c4-testing install $APPNAME", or if you don't have the testing repository installed, you can get the .repo file from http://dev.centos.org/centos/4/CentOS-Testing.repo
-- Jim Perrin