Webtatic.com provides its own repository. If you want to get the latest packages such as PHP and MySQL, you can consider adding it to your yum repo by the following steps.
1. Add the yum repository information
2. Install the PHP
- yum –enablerepo=webtatic install php
3. Or update the PHP
- yum –enablerepo=webtatic update php
For more information, please refer to Webtatic.com – PHP 5.3 on CentOS/RHEL 5.6.
Reference: Webtatic.com – PHP 5.3 on CentOS/RHEL 5.6