How to solve refresh page problem?

[rkrathor]

@xMog

In websites and applications I worked on, when there is a post, we just do a redirect after the post is done and then display a message on the page, not with a JavaScript popup. If the user refreshes the page, the form won’t be reposted. But, the message will be displayed again, but honestly, that’s not really a problem since it’s not a JavaScript dialog box. This, or you just post the form in Ajax, that way, you won’t have this problem.

But by this way i will not able to get the value of php variable because it will not be there after post by jquery or ajax done.
i only can show message but i too want a variable with value must be shown.
Thanks