how to remember input data in the forms even after refresh page?

Question

what to do in order to make the form remember the previous input or the current input of the user even after he/she refreshed the page ?

should I do ,

Answer 1

If you mean, filling out form fields and clicking refresh, then there is no direct way, as the data isn't submitted. That sort of behavior is up to the browser.

The only thing you could do is post the data via AJAX back to your server as the fields change. Your PHP script receiving the data would set some session variables. When the form loads, you would set their default values to the appropriate session values.

Rarely though is there a need for this kind of behavior. There will be many requests sent back and forth to your server.