This question is an exact duplicate of:

i want to save previous $_GET and get it in the next refresh. then use it to see if it has been changed or not. i want to do it because is i change may form and go to next page, in the next page it will go to the next page of new form! is it possible?

marked as duplicate by fuxia Apr 11 at 14:01

This question was marked as an exact duplicate of an existing question.

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