Environment Variable based PHP Extension loading

Hey, I would like to load PHP extensions by environment variables in a containerized environment. All existing solutions are moving files in an entrypoint and this does not work for read-only containers. Why this? Extensions like Blackfire/XDebug/OpenTelemetry/Tideways do not like each to run at the same time, and having to build less containers simplifies a lot. It's already possible to use environment variables in the php.ini like so: extension=${PHP_PROFILER} So it's possible to toggle the extensions already, the only thing that is not working is passing an empty string (I don't want any profiler). Then we get warnings like: Warning: PHP Startup: Unable to load dynamic library '" Therefore I opened a pull request to ignore extension entries with empty strings, so this works with that case too. Looking for feedback in the pull request https://github.com/php/php-src/pull/19816 Thanks!