Authentication + authorisation in Codeigniter 3

Thanks I will try it.

But what about that Tank auth? Does it work? I fix that error with language from first post. Now it throws me an error "Unknown column 'data' in 'field list'" It seems that session library can not find data field in ci_session table. My ci_session table comes from Tank auth. Is there a way to fix that?

PS: Dear admin! This security politics is really sick! Where are my previous posts? How can I communicate with other users?!