Hi, On Thu, Mar 15, 2012 at 12:17 AM, Tilman Schmidt <t.schmidt at phoenixsoftware.de> wrote: > Unfortunately it seems that PHP code written for 5.2 won't necessarily > run on either 5.1 or 5.3. I'm not a PHP expert myself but my PHP-savvy > colleagues and customers unanimously tell me so. So what's a poor web > server admin to do? I am doomed to keep around one webserver with PHP > 5.1, one with PHP 5.2 and one with PHP 5.3, only hoping one of them will > have been deserted by the time PHP 5.4 is released. The Rackspace IUS repo provides PHP 5.2 packages. See docs how to use it: http://iuscommunity.org/Docs/ClientUsageGuide#Upgrading_Stock_RHEL_Packages_to_IUS_Packages I am running their php 5.2 on one of my centos5 servers without no probs. I upgraded from the php in the testing repo. Best, Peter