Welcome to WebmasterWorld Guest from 220.127.116.11
BUT... on one of my sites this isn't happening and I can't understand why. I can click Back and the page displays just fine. I don't want that to happen as I want to generate a unique transaction ID each time that page is displayed.
The page is submitted via POST to PHP_SELF but I've tried submitting it to a different page and that makes no difference.
Has anyone come across this problem before? I've been scratching my head for hours.
Having investigated a bit further I think it may be something to do with the fact I'm using mod_rewrite on that site. I've just looked at another site that uses mod_rewrite and their form results pages are cached too. Need to do a bit more investigation.