navigate back with PHP form submission

Question

So here is the deal, I am using HTML forms to transfer variables from page to page and PHP script to create pages based on values submitted. In general it looks like this:

Answer 1

None of the other answers worked for me.

• I don't want to redirect
• Setting different headers didn't work
• I already use tokens in my post to ensure re-submission can't happen
• I post to the same url the form is showing on

This simple javascript fixes my issue of the back button throwing "ERR_CACHE_MISS"

if ( window.history.replaceState ) {
  window.history.replaceState( null, null, window.location.href );
}