Question

acitvity.php

//Form start

   <form action=''>

   </form>

//Form End

//Get POST Values

<?php 

$_POST[''];

?>

//End

if i refresh the page after form is submitted, all the posted values are resubmitted, reason because all values are in browser so they are resubmitted. When i was searching solution for this, i got info that if the form & post operation done in separate php file then no more issue in posting values on refresh.

Is this the solutions? but now i have to do both in single file & POST values should not be submitted again on refresh.. is there any way to do this???

Answer 1

Learn PRG Pattern so that you can do this properly 🙂

http://en.wikipedia.org/wiki/Post/Redirect/Get

For example, you are trying to handle a user registration form, so what you do is you get a bunch of POSTed values, and save it into your database.

if(!empty($_POST)) {
   // validate and save to db

   // get last inserted user_id
}

After you do that, instead of returning the same page with the previously POSTed values, you redirect the new user, for example to his profile page (assuming you have no activation requirement in place)

if(!empty($_POST)) {
   // validate and save to db

   // get last inserted user_id, say in $user_id

   header("Location: /users/$user_id");
}

That way, the browser redirects and you won’t have problem with say, double registration, whenever the user hits refresh.