Re: [PHP] Disable refresh?
Ernest E Vogelsinger wrote: This will not stop the user from hitting the "Back" button and refreshing the form... If the user wants it he can do it even with your method. My point is he don't do it unintentionally, so I use just the Location method -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Disable refresh?
you can use a session : - start the session when the form is first sent - destroy the session upon the first valid insert - subsequent upadates will be prevented since the session is destroyed.. usually multiple updates happens when the user hits the submit button several times or upon refreshing the page ... hence the session method should work fine good luck ! --- Larry Brown <[EMAIL PROTECTED]> wrote: > Anyone know of a method of preventing a user from > refreshing a page. I get > multiple updates with the same information in my > database... > > Larry S. Brown > Dimension Networks, Inc. > (727) 723-8388 > > > > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > = +--+ |Wana Know what ISLAM is all about ? | +--+ visit : http://www.sultan.org/#int __ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] Disable refresh?
At 02:41 02.12.2002, Martin Towell said:
[snip]
>no, no way to disable and no variable to say a refresh happened
>
>one way to get around it is to submit to the page that does the update, then
>get that page to do a header("location...") to another page. When the user
>refreshes, they'll only refresh the last page, and not the updating page.
[snip]
This will not stop the user from hitting the "Back" button and refreshing
the form... What I do (and it works flawlessly) is to have a serial number
stored in the session data. This serial number, mirrored in form data as a
hidden field, is incremented with each klick the script receives. Thus the
code handling script input is able to determine if the form it just
received is the last form it generated (serial number matches), or is
outdated (serial number mismatches), for what reason ever, be it a refresh
or the user stepping back and resubmitting.
--
>O Ernest E. Vogelsinger
(\)ICQ #13394035
^ http://www.vogelsinger.at/
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RE: [PHP] Disable refresh?
Thanks guys this forum is going to get me in trouble. It is so convenient I keep asking questions too soon. After submitting the amendment to the original question I thought of the solution of setting a session variable and then clearing it before and after the submittal page. I'll work the gray matter a little harder next time before asking. Thanks again. Larry S. Brown Dimension Networks, Inc. (727) 723-8388 -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Sunday, December 01, 2002 8:58 PM To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: Re: [PHP] Disable refresh? > Anyone know of a method of preventing a user from refreshing a page. I > get multiple updates with the same information in my database... Hello! You can prevent it multiple ways. Two common solution: - When creating form, add a unique id to it in a hidden field. After succesful insert put that id into a container table, what stores used ids. Before inserting, check the presence of that id in that container. You can make unique ids with php's uniquid() function, or if mod_unique_id compiled into Apache, you can use $_SERVER['UNIQUE_ID'] too. Store expire dates too with that ids to be able delete old ids with a cronjob. - Another way: this is easier, but not too elegant. After inserting data, send a location header to browser to redirect it from that form-processor page to an another. After that, refreshing affects that page. Heilig (Cece) Szabolcs [EMAIL PROTECTED] - http://phphost.hu -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] Disable refresh?
no, no way to disable and no variable to say a refresh happened
one way to get around it is to submit to the page that does the update, then
get that page to do a header("location...") to another page. When the user
refreshes, they'll only refresh the last page, and not the updating page.
HTH
Martin
-Original Message-
From: Larry Brown [mailto:[EMAIL PROTECTED]]
Sent: Monday, December 02, 2002 12:33 PM
To: PHP List
Subject: RE: [PHP] Disable refresh?
If not, is there a variable that provides information that a refresh
occurred to load the page?
Larry S. Brown
Dimension Networks, Inc.
(727) 723-8388
-Original Message-
From: Larry Brown [mailto:[EMAIL PROTECTED]]
Sent: Sunday, December 01, 2002 8:23 PM
To: PHP List
Subject: [PHP] Disable refresh?
Anyone know of a method of preventing a user from refreshing a page. I get
multiple updates with the same information in my database...
Larry S. Brown
Dimension Networks, Inc.
(727) 723-8388
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RE: [PHP] Disable refresh?
If not, is there a variable that provides information that a refresh occurred to load the page? Larry S. Brown Dimension Networks, Inc. (727) 723-8388 -Original Message- From: Larry Brown [mailto:[EMAIL PROTECTED]] Sent: Sunday, December 01, 2002 8:23 PM To: PHP List Subject: [PHP] Disable refresh? Anyone know of a method of preventing a user from refreshing a page. I get multiple updates with the same information in my database... Larry S. Brown Dimension Networks, Inc. (727) 723-8388 -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Disable refresh?
Anyone know of a method of preventing a user from refreshing a page. I get multiple updates with the same information in my database... Larry S. Brown Dimension Networks, Inc. (727) 723-8388 -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
