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i seen this artical b4... but my problem not solve yet...
maybe i'm not understand...
can anyone tell me how to make it?
after i logged off... how to make the page become expire if i hit back...
(just like the phpmyadmin, whenver i hit back, there came out a page that said page've expired)
When you click back you're most likely viewing a cached page, but as long as you have a user authentication function for each page, it should disallow anything that requires being logged in. ie, you click "delete item", and that page would tell you that you are required to be logged in.