Beauford, I think you miss the point. The point is that the values are not remembered by the server at all (after the script finished running), so you don't have to explicitely destroy them. The unset() function is for session variables, which are remembered by the server even after the script finished running, that's their purpose. Your variables are not session variables but normal variables. BUT they are remembered by the browser, which may send them again to your script, that's why you get the same values again. So you have to apply some workaround to make the browser not send them again. Greets, Zoltán Németh 2007. 01. 12, péntek keltezéssel 11.23-kor Beauford ezt írta: > So the answer is, there is no way to destroy the values. Question then, what > is unset() used for as it doesn't seem to do anything? With a language as > good as PHP I though there would be some way to do this. I have got a > workaround, but that's exactly what it is - a work around. I am also still > confused as to why giving them a null value doesn't work. > > Thanks to all. > > > > -----Original Message----- > > From: Satyam [mailto:Satyam@xxxxxxxxxxxxx] > > Sent: January 12, 2007 8:21 AM > > To: Beauford; PHP > > Subject: Re: Forms and destroying values > > > > This issue comes over and over again. The trick, as I > > learned from this list, is to send a redirect to the browser > > to a confirmation page, so the browser remembers the page > > redirected to and completely ignores the page that made the > > redirection so that neither a refresh nor going back to it > > can repeat the operation. > > > > So, if the database update has been succesful, use the > > header() function to send a 'location' header along with > > enough arguments in the URL to display a significant > > confirmation message but make sure that it is different from > > the URL that makes the database update. It will be this > > address, not the > > post that made the database update, that the browser will remember. > > > > Satyam > > > > > > > > ----- Original Message ----- > > From: "Beauford" <phpuser@xxxxxxxxxx> > > To: "PHP" <php-general@xxxxxxxxxxxxx> > > Sent: Friday, January 12, 2007 9:27 AM > > Subject: Forms and destroying values > > > > > > > Hi, > > > > > > How do I stop contents of a form from being readded to the > > database if the > > > user hits the refresh button on their browser. > > > > > > I have tried to unset/destroy the variables in several > > different ways, but > > > it still does it. > > > > > > After the info is written I unset the variables by using > > unset($var1, > > > $var2, > > > $etc). I have also tried unset($_POST['var1'], $_POST['var2'], > > > $_POST['etc']). I even got deperate and tried $var = ""; or > > $_POST['var'] > > > = > > > ""; > > > > > > What do I need to do to get rid of these values??? > > Obviously I am missing > > > something. > > > > > > Any help is appreciated. > > > > > > Thanks > > > > > > -- > > > 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 General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
