Hi! I would like to make a similar website as "wikipedia.org" i.e. it has all the language versions of Wikipedia and a search bar. I can't find the source code for this website anywhere (even on GitHub) so I thought I'd ask here where could I get the source code for the website? And Google’s source code tool doesn’t help because it doesn’t provide more specific (PHP codes) for security reasons. I would think such files are publicly visible on Wikimedia because you have open source.
Thank you for the answers in advance and thank you for the effort you have seen!