Stop $_POST from having the same value when I refresh

Posted by Cortopasta on Stack Overflow See other posts from Stack Overflow or by Cortopasta
Published on 2010-06-07T22:55:27Z Indexed on 2010/06/07 23:02 UTC
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When a vote value is changed, the form POSTs the change, then refreshes the page. This is called on the top of the page upon load:

  if (isset($_POST['q'.$question_id]))
    {
    $user->updateQuestionVotes($question_id, $_POST['q'.$question_id]);
    }

Why does it update every time I refresh after the first time? Do I need to unset it somehow?

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