Everyone knows that CentOS only takes care of some specific core packages. All others, if you want to continue using RPM's, must be used from alternative Repositories. There are many alternatives:
I especially do contributions to the OKay repository. So, if you want to use OKay follow these steps:
I will post later as I publish some updates or packages.
Soon I will stop updating the CentOS 6 repository.
So, as I am doing a very cool service I got into the dilemma of finding a user management system. It doesn't make sense to write all again if there are projects such as Joomla that does that very well. So my problem was reduced from coding a user management system to authenticating against Joomla.
After browsing I read several scripts that inspired me to write the one I need: https://bitbucket.org/daniel-lucio/external-joomla-http-authentication/src/master/
Under ISPConfig 3 you can have more than one PHP release available for your websites. Not every project runs perfectly in all versions, there is still out there some software that needs PHP 5.
I will show how easy is to add new PHP versions. This example installs PHP 7.2. UPDATE: PHP 7.3 and 7.4 RPM's are out, the same process applies to them.