Hello! we've always used this guide to install additional PHP Version on our ISPConfig servers. (https://www.howtoforge.com/ispconfig-php-debian/) As far as I know it is possible to install php8.5 on debian 11 but: Is that compatible with ispconfig 3.3.0p2 as well, and can it be installed and configured the way is described in the guide for up to php 8.4? I would like to install it on an ispconfig webserver runnning debian 11. Any help and information is much appreciated.
In general, yes. Installing a PHP version is always the same procedire, just numbers change. If it's available for Debian 11 and not just 12 and 13, you have to try it. If I remember correctly, the free packages from sury are for the last 2 Debian versions only, so you might not get them for Debian 11 anymore. better upgrade to debian 12 or 13.
