PowerStack is a repository that allows you to run the latest LAMP versions in your Enterprise Linux. Currently both CentOS and RHEL are supported (i686 and x86_64).
rpm -Uvh http://download.powerstack.org/powerstack-release-0-2.noarch.rpm
yum update php
From http://wiki.powerstack.org/PowerStack
It’s a very cool project, thanks for the developers.