how to set session time. session problem

[imi_99]

HI, I am storing and retrieving username, listingid, and user type using session. On my machine It works fine but on the internet server session expires after some time.I want to set session time for each category. do someone knows how to set it. thanks.

Second confusion question is when user login in like in car website and enter a car details when he click on submit button then after submitting, if session get destroy because of its time limit and listingid can not get into the mysql table. what possiblity can be make to avoid such situation. any idea, advice will be appreciated.
regards

[Kudose]

Use [man]ini_set[/man] on the session.gc_maxlifetime setting. It takes an integer value based on seconds.

60 seconds 60 minutes = 3600 seconds (1 hour)
3600 seconds 24 hours = 86400 seconds (1 day)

i.e.

ini_set("session.gc_maxlifetime", 86400);