在我们的自定义会话超时中对sessioncookie的困惑

Question

I have read the following tutorial: How do I expire a PHP session after 30 minutes?

But is it necessary to set session.cookie_lifetime to 0? If necessary, when should we set it ?

I do not want to spoil that useful tutorial by asking question there.

Answer 1

it is necessary to set the expiration as an expiry date in seconds (UTC format), not a timespan from current time, so use

time()+(60*30)

for expiry date parameter. time function outputs current time in seconds, and you are adding seconds to it if you set it to 0 cookie will expire when client closes his browser