Avoiding form resubmit in php when pressing f5
Your method could work in theory, but there's a much easier way.
After submitting the form successfully, perform a redirect. It doesn't matter where to, but it'll clear the $_POST.
header('Location: http://www.example.com/form.php');In your case, it sounds like you want to redirect to the page you're already on. Append a $_GET parameter to the URL if you want to display a confirmation message.
Hope this helps,
Tom
The best way to handle forms is to use self-submission and a redirect. Something like this:
if (isset($_POST)) { // Perform your validation and whatever it is you wanted to do // Perform your redirect}// If we get here they didn't submit the form - display it to them.Using the CodeIgniter framework:
function index() { $this->load->library('validation'); // Your validation rules if ($this->form_validation->run()) { // Perform your database changes via your model redirect(''); return; } // The form didn't validate (or the user hasn't submitted) $this->load->view('yourview');}