Christopher Jones has a (very) quick announcement about the latest builds of the PHP RPMs for Enterprise linux installations:

PHP 5.2.5 RPMs for x86 Enterprise Linux (i.e. RHEL) 4.6 and 5.1 are on http://oss.oracle.com/projects/php/. These are supplied "as is".

The RPMs are part of a project to provide support for Oracle Enterprise Linux servers (as well as Red Hat installs) and provide a PHP command line, CGI interface and an Apache module quickly and easily. Check out the project page to find out more and to grab this latest build.