Laravel Session Time Out Remaining - laravel

Question

There's a variety of answers regarding detecting IF the session has timed out. I am NOT asking that.
I am asking, how can I tell exactly how much time is remaining the user's Laravel session.
Assume I am using the latest version of Laravel.
I am strongly interested in knowing what the Laravel subsystem thinks is the time left remaining before it's native/built-in session timeout expires.
I am strongly against rolling my own, or creating my own custom timer of any sort.
Not that it matters, but my session lifetime setting configuration (session.php) looks like this (below). And my .ENV setting is also SESSION_LIFETIME=10.
/*
|--------------------------------------------------------------------------
| Session Lifetime
|--------------------------------------------------------------------------
|
| Here you may specify the number of minutes that you wish the session
| to be allowed to remain idle before it expires. If you want them
| to immediately expire on the browser closing, set that option.
|
*/
'lifetime' => env('SESSION_LIFETIME', 10),

Answer 1

This question is very specific to the session handler in use. If you need to know the time remaining before it expires, you must calculate it manually depending on the session handler like so:
File session handler: remaining time = last modified timestamp of file + session lifetime - current timestamp
Cookie session handler: remaining time = cookie expiry time - current time
Database session handler: remaining time = last_activity column value in session table + session lifetime - current timestamp
Cache session handler: remaining time = cache ttl
The session drivers use different session handler implementations as follows:
Cookie driver: Cookie session handler
File driver: File session handler
Database driver: Database session handler
APC: Cache session handler
Memcached: Cache session handler
Redis: Cache session handler