PHP how to reset POST

Question

I try to reset the Post's after I send the form. In some threads I read that it could be $_POST = array(); but when I tried it, it doesn't works.

Are there any solutions to reset the POST's?

Arshid KV · Answer 1 · 2021-10-05T18:25:13.357

3

You can reset the post as follows;

 foreach ($_POST as $key => $value) {
    $_POST[$key] = NULL;
 }

Method 2:-

unset($_POST);

edited Oct 05 '21 at 18:25

answered Oct 18 '16 at 16:16

Arshid KV

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is it possible when I refresh with F5 my browser that all Posts are cleared? – ToExeCute Oct 18 '16 at 16:24
wait mabye I make a mistake here: after I send the Post and saved it with the query I press F5 to refresh an in my database is the post twice. – ToExeCute Oct 18 '16 at 16:36
I think you will prevent that submitted data will be inserted twice into your database? – h0mebrewer Oct 18 '16 at 16:51
Please add above code in top part of the .php file. – Arshid KV Oct 18 '16 at 17:03

Reto · Accepted Answer · 2016-10-18T17:55:35.227

In order to prevent a form from being re-submitted, you could do something like this - it should be pretty self explanatory:

function uniquePost($posted) {
    // take some form values
    $description = $posted['t_betreff'].$posted['t_bereich'].$posted['t_nachricht']; 
    // check if session hash matches current form hash
    if (isset($_SESSION['form_hash']) && $_SESSION['form_hash'] == md5($description) ) {
       // form was re-submitted return false
       return false;
    }
    // set the session value to prevent re-submit
    $_SESSION['form_hash'] = md5($description);
    return true;
}

if (isset($_POST["t_submit"]) && uniquePost($_POST)) {
    $ticket_query   =   $db->prepare("INSERT INTO `ticket` (`Absender`, `Betreff`, `Abteilung`, `Prioritat`, `Erstellt`, `Nachricht`) VALUES (:sender, :betreff, :abteilung, :priority, :datum, :nachricht)");
    $ticket_query->execute(array(
    'sender'    =>  $_SESSION["id"],
    'betreff'   =>  $t_betreff,
    'abteilung' =>  $t_bereich,
    'priority'  =>  $t_priority,
    'datum'     =>  date('d.m.Y'),
    'nachricht' =>  $t_nachricht                                        
    ));
    // no need to reset the post variables
}

Seriously? That's what the OP was asking? Totally unclear question. However if it's asking about not resubmitting the form, you can also just [Post/Redirect/Get](https://en.wikipedia.org/wiki/Post/Redirect/Get). — Mike, Oct 20 '16 at 19:25

score 2 · Answer 3 · answered Aug 20 '19 at 20:07

I am currently working on this and came with a working solution.

Just using unset($_POST) is not doing the trick. There is still the popup from to resend the information. The way to reset it is actually to send it to another page. This can be done with the header function.

  header("Location: " . $_SERVER['PHP_SELF']);

You will now be free of the message and your $_POST data.

score 0 · Answer 4 · answered Oct 18 '16 at 16:16

0

How about simply

unset($_POST);

answered Oct 18 '16 at 16:16

Dave

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score 0 · Answer 5 · answered Oct 22 '21 at 13:46

0

https://stackoverflow.com/a/45199686/17220395

To reload the page keeping the POST data, use:

window.location.reload();

To reload the page discarding the POST data (perform a GET request), use:

window.location.href = window.location.href;

answered Oct 22 '21 at 13:46

spp

1

score -1 · Answer 6 · edited Mar 25 '23 at 12:12

-1

<script type="text/javascript">    
  if (window.history.replaceState) {
    // reset form on refresh.
    window.history.replaceState(null, null, window.location.href);
  }
</script>

edited Mar 25 '23 at 12:12

Tyler2P

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answered Mar 25 '23 at 10:11

Priyank Kotiyal

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Your answer could be improved by adding more information on what the code does and how it helps the OP. – Tyler2P Mar 25 '23 at 12:12

PHP how to reset POST

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