Duplicate Orders

Hello,

One of my sites has starting duplicating orders on a regular basis. We had a customer specifically email us to tell what had happened. She said she submitted the order from confirm.php page, and was returned to the same page, where she hit submit again. Both orders went through. So she was not redirected to the order success page. I assume this is what has been happening with all the other duplicate orders. But it doesn't happen every time.

I recently had a problem come up where the checkout page somehow got extra code added that put the site into sandbox mode. You helped me fix that. I wonder if something happened to this page as well. Here is that thread: showthread.php?t=18119

I've attached the confirm.php page here.

Just got more information. This is what the customer also told us of her experience - "I never received confirmation on the website – it looked like some kind of hiccup loop. But I did get an email receipt after I wrote to you – just one, though." Two orders did go into payPay even though she got only one receipt.

Adam

if the confirm page is not directing to the success page on the order success, it sounds like there is a php error happening that is preventing the redirect.

add the following code at line 1 of the confirm page to turn error reporting on:

<?php 

error_reporting(E_ALL);

ini_set('display_errors','on');

?>

can you reproduce the problem?

If a php error is occurring, then is should show at the top of the confirm page.

The error is very intermittent. I can't reproduce it, though it's happened about a dozen times in the last few weeks. I'm not sure what to do.

Without being able to reproduce the problem, it is impossible to troubleshoot the cause.

Start by adding the error reporting code, and adding a message next to the submit order button to warn customers not click the button a second time if not redirected.

if they are not redirected, the error reporting code should show a php error, it should also be recorded in the servers error log. If you know the day and time of some of the duplicate orders, you could contact the host to see if they can give you access to the server error log to see what is going wrong. This could give some information to work from.