Hi I have installation working under CentOS 5.7, ispconfig3 and default PHP packets installed, eg. 5.1. Now i have a couple customers that needs 5.2/5.3. Is it possible to use CentOS php53 packets, eg. remove all php (v5.1.x) packets and install php53 packets and all ispconfig3 stuff still works, etc?
Yes, that should work. But you might want to check out this posting before: http://www.howtoforge.com/centos-5.6-php53-common-conflicts-with-php-common