I have installed FC5 and followed the "Perfect FC Install Guide". I also have ISPConfig 2.2.3 installed. I'm having problems with running Zen-Cart and other applications and it was recommended that I change to PHP 4. Can someone point me to a guide to do that? And how do I keep my ISPConfig working during the downgrade? Thanks.
Due to the fact that ISPConfig uses its own Apache including php, it does not affect your local configuration. In Debian just need to erase all php5 packages (if the came via such packagemanager) and install php4 afterwards. that's all.
Try to enable the compatibility mode in php.ini, this helped me in the beginning as to have time to convert to php5 version of my software. I have no clue how to do that in ISPConfig, manually you can go to /etc/php.ini and search for compatibility, the value will be 0, change to 1 to enable. PS : It doesn't work will all programs!
