Is there a reason that Python tags are in ctags format and php tags in tagmanager?
Before #3039, Python tags were also in tagmanager format and so are the PHP tags.
As said in https://github.com/geany/geany/pull/3488#issuecomment-1537369732, I would switch the format to ctags for the PHP tags as well. But I'd like to make this iterative to avoid a huge "I do it all in one"-PR :).