PHP Session Cookie

Question

I have a php session . It's lifetime expiration is set to 1 week from current date(30-dec-2013).

Scenario: 1. Changed system time to 6th January 2014 , then expiry date changed to 13th Jan 2014 (i.e one week from 6th Jan 2014). 2. Now again I changed system time to current date and time (30-dec-2013),

Doubt: Still the expiry date is shown as 13th Jan 2014 , Should not it be 6th Jan, since it is set for one week from today's date?

Thanks in advance!!

Did you reset the session after you set the date back to today? — putvande
– putvande, Commented Dec 30, 2013 at 13:02
Try that in the Private Mode of your browser (Crtl+shift+P in Firefox). There you are shure that you don't have already an Session open — Matthias Dunkel
– Matthias Dunkel, Commented Dec 30, 2013 at 13:06

Noishe · Accepted Answer · 2013-12-30 13:07:06Z

1

When you increased the time of your machine, the cookie was expired and so was not sent. As such, the server generated a new cookie with a new expiry date.

When you decreased the time on your machine, the cookie was still valid, so it was sent. PHP saw the valid cookie and so saw no reason to issue a new cookie with a new expiry date.

If you want to force php to emit a new cookie with a new expiry date, even if the old cookie is still valid, then put this snippet in your code before calling session_start.

if(isset($_COOKIE[session_name()]))
{
    session_id(session_id());
}

answered Dec 30, 2013 at 13:07

Noishe

1,42111 silver badges14 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

PHP Session Cookie

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related