Perhaps it might help to think about this from the point of view of what you are trying to prevent. Is the most important thing to make sure that your data integrity is intact? For example, - you allow users to add a record on page 1 - on page 2, check that the record does not already exist, if it doesn't then insert it - you allow users to update or delete a record on page 1 - the only problem here is if they are trying to update a record they have already deleted, then pressed back to see it again. Once again, you just need to check for its existence on page before running the update query. This way, you don't need to worry about what the browser does when the user hits back, or which page it serves Mark -----Original Message----- From: Richard Lynch [mailto:ceo@xxxxxxxxx] Sent: 27 April 2005 06:03 To: Matthew Weier O'Phinney Cc: php-general@xxxxxxxxxxxxx Subject: Re: Re: handling a user pressing browser's back button On Tue, April 26, 2005 7:02 pm, Matthew Weier O'Phinney said: > 1. Display form on page 1. Page 1 has Cache-Control: no-cache header. > 2. User submits form to page 2 3. Page 2 processes form, stores > required variables in session, and then > redirects to page 3. > 4. Page 3 displays results (success page, search results, etc.) > > At this point, when you hit the back button, you *should* get to page > 1... which, because of the no-cache header, is forced to reload. Except that if you're fast enough, and can hit the ALT-left_arrow, and then escape fast enough to get to page 2. Or, with some browsers, you can't get "back" to page 1 AT ALL, unless you hit "back" twice rapidly in succession, or use the popup back menu to "skip" the middle page that does the re-direct. I *hate* sites that do this to me! I've even been known to just stop using a site if it annoys me often enough in this regard. YMMV NATAU (Not applicable to all users) -- Like Music? http://l-i-e.com/artists.htm -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php Gamma Global : Suppliers of HPCompaq, IBM, Acer, EPI, APC, Cyclades, D-Link, Cisco, Sun Microsystems, 3Com GAMMA GLOBAL (UK) LTD IS A RECOGNISED 'INVESTOR IN PEOPLE' AND AN 'ISO 9001 2000' REGISTERED COMPANY ********************************************************************** CONFIDENTIALITY NOTICE: This Email is confidential and may also be privileged. If you are not the intended recipient, please notify the sender IMMEDIATELY; you should not copy the email or use it for any purpose or disclose its contents to any other person. GENERAL STATEMENT: Any statements made, or intentions expressed in this communication may not necessarily reflect the view of Gamma Global (UK) Ltd. Be advised that no content herein may be held binding upon Gamma Global (UK) Ltd or any associated company unless confirmed by the issuance of a formal contractual document or Purchase Order, subject to our Terms and Conditions available from http://www.gammaglobal.com E&OE ********************************************************************** ********************************************************************** -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
