On 9/11/07, Stut <stuttle@xxxxxxxxx> wrote: > Please include the list when replying. > > Shahrzad wrote: > > Mercyyy Stut for your reply, > > No problem. > > > For the reason of sessions ,,,, I want no one can back to previous > > page,if somebody temptates to do that, either this error occur : > > "HTTP/1.0 404 Not Found" or that page reload again . > > Can I do this with javaScript or something else? > > There are some nasty evil hacks that can achieve this, but you really > don't want to. > > There are two possible solutions to your problem... > > 1) Write your code in such a way that it doesn't matter if someone goes > back to a previous page and resubmits it. > > 2) Use the session to keep track of what page the user is on. That way > if they do hit the back button you can tell them they've not allowed to > do that and provide a link to the page they should be one. > > The first option is the best because the second is very poor UI design. > > Is there a reason why the user cannot go back to a previous page? What > is technically stopping you handling that situation? > > -Stut > > -- > http://stut.net/ > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > > What about the following? L> page1.php <? session_start(); if($_SESSION['already_submitted'] == True) { header("Location: page2.php"); } // Continue with your existing code from the first page. ?> L> page2.php <? session_start(); $_SESSION['already_visited'] = True; // Set this now. // Continue with the rest of your code from the second page. ?> For as long as that session remains active, any time the user attempts to reload that page, they'll be forwarded to a page of your choice (in this case, page2.php). If you absolutely want a 404 error, you can either spoof one or legitimately create one --- by forwarding them to a page that does not and will not ever exist on your server. Not a very elegant solution, but it will work. -- Daniel P. Brown [office] (570-) 587-7080 Ext. 272 [mobile] (570-) 766-8107 Give a man a fish, he'll eat for a day. Then you'll find out he was allergic and is hospitalized. See? No good deed goes unpunished.... -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
