Upgarde PHP via Pleask

http://www.swiftcore.com/en/software/upgrade-php-52x-plesk-default-php-51x.html


Upgrade PHP to 5.2.x from Plesk default PHP 5.1.x
July 31, 2009 - 5:09pm — Yuan Quan

By default Plesk installation, the PHP version is 5.1.x, if you want to upgrade it to 5.2 or even 5.3, please follow these steps:

Login via SSH as root user first.

Upgrading PHP:

wget -q -O - http://www.atomicorp.com/installers/atomic.sh | sh
yum update php