javascript - Post redirect Get on same page PHP -

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this old issue , have consulted many questions on before posting this

how prevent form resubmission when page refreshed via php

post/redirect/get on same page firefox

preventing form resubmission

and many other.

i have small app , structure this

index.php (acting controller)  viewsfolder(contains html)  models(contain db insertion etc)

when user lands on index.php show him required view suppose 

require_once(views/signin.php)

user submits form on index.php, signin.php posts data index.php?signin=true. call required function models , make redirect itself. avoid form re-submission.

apparently in chrome , in firefox still able resubmit form , click on button of browser go previous page. destroys whole business logic.

i assume redirection should here n't know can use ajax avoid of that, cant without ajax. don't think every mvc based cms using ajax on backend.

is wrong me architecture ?


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