One way I've handled this is to use a session management framework and put something in the session on the first submit to indicate that it has been processed. I check for the presence of this flag before doing anything with the form data and show an appropriate message if I see that it's already been done.

I use Apache::Session but there are other options.

In reply to Re: Why does my script run again, when I refresh my results page? by iguanodon
in thread Why does my script run again, when I refresh my results page? by Anonymous Monk

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