Hi to all, sorry my bad English I speak Spanish,
As WP and phpBB user I'm building a BRIDGE, that makes possible to phpBB users comment in WP with the same session from phpbb, if you are interested in the code I can post the link to my GITHUB.
Lately I have a problem :
WP and phpBB and both have same functions and that's a problem with the phpbb validate_username function is that at phpbb have 3 different authentication method the most common is DB, and with that there is no problem, other methods need the "validate_username" function to work property
As I see a big section for "deprecated functions" in WP, I think will be possible for WP to do it.
Another function is "make_clickable", but that is easy to hack in phpBB.
I hope you can understand me, and the problem.