problem with header() and multiple form submissions

[aguilanegra]

I have been experiencing problems with pages that use header().

I have a PHP page that does some processing of data (i.e. database INSERTs and UPDATEs) submitted by a form on the previous page using a POST. Please refer to this pseudocode:

0. Form page
1. User hits submit
2. Data is processed on PHP page
3. User is redirect to original form page with confirmation message.

After all of the processing is complete (at stage 2), I employ a header statement at the end of the page as follows:

// begin PHP code
$redirect_page = '/shipping/view_detail.php?id=' . $new_id;

header("Location: $redirect_page");
exit;
// end PHP code

It appears that for some users, the form data ends up being submitted more than once, sometimes twice, sometimes five times.

Is there a way to prevent this from happening? Any advice as to how to track this down and stop it would be great.

Thank you,

Mateo Nares

[tommynanda]

This is might happen when the user continously clicks on submit button or refreshes the page.

Solutions:

1. Disable Submit button onClick. (HTML and JavaScript)

2. redirect to same page(with some if else logic) to avoid refresh entries.

For now this is wat strikes my mind...

Good Luck
TommYNandA