Hi Phil,
Pretty simple actually. Let's take an example with this form:
http://www.appnitro.com/forms/view.php?id=19
That form is having form_id = 19 and the "Redirect To" dropdown is having id = "element_2" (view the HTML source to see this)
The dropdown is having some values:
<option value="1" >Google</option>
<option value="2" >Yahoo</option>
<option value="3" >MSN</option>
Now, the plan is to redirect to either Google or Yahoo or MSN, based on the selected dropdown.
Edit your includes/post-functions.php file, around line 1173 - 1175 you'll find this code:
if(!empty($form_review)){
$process_result['review_id'] = $record_insert_id;
}
Exactly below the above code, add this code:
if($form_id == 19){
switch ($user_input['element_2']){
case 1 : $redirect = 'http://www.google.com'; break;
case 2 : $redirect = 'http://www.yahoo.com'; break;
case 3 : $redirect = 'http://www.msn.com'; break;
}
$process_result['form_redirect'] = $redirect;
}
That would do it.
Of course, you will need to adjust the above code with your own values.
Note: The code above only work for form with "Form Review" disabled.