How to Go Back to Same Page After GET Validation?

[dealmaker]

Hi,
How to I make the script to go back to the same webpage if hacker tries to change the GET variables at the URL query string? I have the validation code, I just don't know how to redirect back to the same page. I can use HTTP_REFERER if the user clicks from one page to the next, but what if the user change the url string in the browser address bar directly?

Many thanks.

[ralph l mayo]

The easiest way is probably to send some javascript, otherwise I think you'd have to keep track of the last page hit by each ip just for this minor functionality. Echo this in the header for the easy route:

<script type="text/javascript">
window.onload = history.back();
</script>