Get cookie expiration

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别那么骄傲
别那么骄傲 2021-01-21 21:56

Is it possible to read cookie expiration time with php ? When I print_r($_COOKIE) it outputs:

Array
(
    [PHPSESSID] => 0afef6bac83a7db8abd9f87b         


        
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  • 2021-01-21 22:37

    Or you can use the function time() on the value of the cookie, that way you need only one cookie and can retrieve data. The php code would look like this:

    setCookie('cookiename', time(), time() + 86400);

    That way, you'll have the cookie expiring in one day, and by retrieving it's value you can discover when it'll expire with something like this:

    86400 - (time() - $_COOKIE['cookiename']);

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  • 2021-01-21 22:41

    no, there is no way.
    Browser uses cookie parameters (path, expiration etc) only to determine to send a cookie or not, but none of these parameters being sent back to server.

    don't think of a cookie as of a $_SESSON array member but as an HTTP header. That's always helps.

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  • 2021-01-21 22:45

    Only name and value are sent to the server so no other cookie data is available.

    You can simply re-set the cookie if you want to extend its duration - that's just a few bytes more in the response so it doesn't matter at all.

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