How code a redirect back to page from form thanks

There’s a great function called wp_redirect(), unfortunately not supporting “last page” argument yet, but I hope it will soon.

I believe the easiest (but not the most elegant way) way to achieve what you need is by using JavaScript, in jQuery it will look like:

<script type="text/javascript">
   jQuery(document).ready(function() {
      jQuery('#back-link').click(function() {
         history.go(-1) 
       });
   });
</script> 
<a href="#" id="back-link">Go back</a>

It won’t refresh the last page though, but in my opinion it’s even better.

Hope it helps.