How to track where sessions are reset?

Question

Yii

The user's language and country setting is stored in the session. The session lifetime is 1 month in both Apache and yii.

'session' => [
            'timeout' => 3600 * 24 * 30,
            'cookieParams' => [
                'lifetime' => 3600 * 24 * 30,
            ],
        ],

I set the language and country, the next day I turn on the computer, these parameters are reset again to the standard ones.
Cookies definitely live for a month (switched the date 29 days ahead, she still lives). Means somehow the session is cleared. How can you figure out where it's going?

Answer 1

well, there are a thousand options
, maybe they are session ones
, maybe the path is not /
maybe (well, suddenly) GC cleans