RE: [PHP] VERY IMPORTANT: Sessions in Pages with a Form !

On Thu, 28 Sep 2000, Jason Murray wrote: > > I have a big trouble: > > > > When I use sessions on a page that also has a form in it the back button > > doesn't work. Like when a subscriber gets an error from my script saying > > that he didn't fill the form out completely and he tries to hit back > button > > of his browser the whole form disappears. Every single field becomes > empty. > > This is common practice in some browsers I believe when under HTTPS. It > means if you're in a netcafe, noone can hit the back button and find your > CC number. > > > I know for sure that it is something that has to do with > > Try structuring your form differently so that it submits to itself. That > way you can validate the input, display the error message and redisplay > the form with the user-submitted values filled in so that they can > correct them on the same screen as the error message. This is a lot > more user-friendly. That is the recommened way. In session land, every client-side caching (be it a browser or a proxy) is a source of inconsistency between data on the server and the displayed information, so we try very hard to force clients not to cache any information. - Sascha