Session.gc_maxlifetime = 1440

I found the quote below in my php.ini file.

session.gc_maxlifetime = 1440

(Q1) Does 1440 mean 1440 seconds?

(Q2) Does it mean 24 minutes?

(Q3) Does it mean that sessions will be dead after 24 minutes?

(Q4) if I change it from 1440 to 36000,
can sessions be alive for 10 hour?

session.gc_maxlifetime = 36000

Gee if only there were something in the PHP manual on session.gc_max_lifetime …

Wait, there is!