When does a cookie with expiration time At end of session expire

Question

There is a session cookie with expiration time which says  At end of session    When exactly does it expire or will it be alive forever

User · Answer

End of the user session means when the browser is shut down   Read this  http   en wikipedia org wiki HTTP cookie Expires and Max-Age

User · Answer

When you use setcookie  you can either set the expiration time to 0 or simply omit the parametre - the cookie will then expire at the end of session  ie  when you close the browser

User · Answer

Just to correct mingos  answer   If you set the expiration time to 0  the cookie won t be created at all  I ve tested this on Google Chrome at least  and when set to 0 that was the result  The cookie  I guess  expires immediately after creation   To set a cookie so it expires at the end of the browsing session  simply OMIT the expiration parameter altogether   Example   Instead of     document cookie    cookie name cookie value  0  path       Just write   document cookie    cookie name cookie value  path

User · Answer

Cookies that  expire at end of the session  expire unpredictably from the user s perspective   On iOS with Safari they expire whenever you switch apps   On Android with Chrome they don t expire when you close the browser   On Windows desktop running Chrome they expire when you close the browser  That s not when you close your website s tab  its when you close all tabs  Nor do they expire if there are any other browser windows open  If users run web apps as windows they might not even know they are browser windows  So your cookie s life depends on what the user is doing with some apparently unrelated app

[php] When does a cookie with expiration time 'At end of session' expire?

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