Hello,I'am Beginner in PHP, Now I meet a Problem with Session . I am Using Session to track my php web application Users ,I just want to know Who is online and Who has offline. I make a Quit Botton on my webpage, But Someone do not use it to quit my system .So I Can't know who has quit my system definitely. My Question is How to unregist session when User Close his browser . Could Anybody help me?
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