How to set php cookie to never expire

In PHP, you can set a longer validity period to ensure that cookies never expire. Setting statements such as "setcookie("cookie_name", "cookie_value", time() 99 * 365 * 24 * 3600); ".

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When setting a cookie in PHP, if the validity period is not specified, then The life cycle is a period of time for the browser, which can also be called non-save. It will disappear after the browser is closed and opened again.

There is no parameter to specify whether to expire or not. The general method is to set a longer validity period, such as 99 years (time is in seconds, and needs to be multiplied by 365 days, 24 hours, and 3600 seconds):

setcookie("cookie_name", "cookie_value", time() + 99 * 365 * 24 * 3600);

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