Preventing a mysql insert on refresh

[juxstapose]

I am building a cycling form that saves data the user enters in on a submit. It then redisplays the form for another entry until the user wants to quit.

My problem is if the page is refreshed after the first pass the insert query goes off. How can I prevent this? And/Or is there a better way of doing this?

eg. looks something like this....

if(!issest($submit))
{
display_form();
}
elseif(isset($submit))
{
insert_data($_POST);
display_form();
}

Thanks,
Mike

[stuartc1]

You could run a check agianst the submitted values and the existing database records to see if the match, and if so don't run the insert. Either that or check the referrer page to see if is the same as the current page (this will only work if the form page is different from the current one).
SC:

[juxstapose]

Thanks for the ideas

-Mike