How to find out if there is a session with nginx?

Question

Nginx

On the PHP side, the session will be raised.
It is necessary to find out if there is such a session with the same name.
For example with cookies. On the PHP side, a cookie with the name __msabio will be written,
and in the nginx config you can write if ($ http_cookie
~* "__msabio" ) { set $flag 1;}

Answer 1

If your sessions are stored in files, you can check the existence of the file in php.net/manual/ru/session.configuration.php#ini.se...