I currently have a website with its own user authentication. It also has 3 separate installations of WordPress in its subdirectories, each loading data from 3 separate databases. What I would like to do is load wp-includes/pluggable.php when authenticating users on the main site in order to carry out WordPress authentication at the same time, as outlined in the following answer:
https://wordpress.stackexchange.com/a/11472
However, as I have 3 WordPress installations that I would have to authenticate users for and generate cookies, this would be extremely difficult. Does anyone have any pointers/ideas on how I would do this?
Thanks
COOKIEHASH
and share it probably, since that's used in the core and cannot be changed. All the necessary functions are indeed inside pluggable.php but you'll have to plug to account for constant definitions and several other barriers. Please provide more information.