Latest PHP 5.4 with MySQL via yum?
The Web Dev Zone is brought to you in partnership with Mendix. Discover how IT departments looking for ways to keep up with demand for business apps has caused a new breed of developers to surface - the Rapid Application Developer.
This is probably the link you are looking for: http://www.webtatic.com/packages/php54/
This one will save you a lot of hours dealing with old PHP 5.3 and newest MySQL 5.6 incompatibilities.