Re: credit card issue

Dear Dave, I did use the include function on top of the form page like this: <? include("includes.php3"); ?> <HTML><HEAD><TITLE>Request Form</TITLE> </HEAD> . . . And I change this line below from $expHeader=$dateHeader-60; // set expire date for 60 seconds ago to be $expHeader=$dateHeader-5; // set expire date for 5 seconds ago After I submit the form and click back button at the browser ( IE 5.0), it still did not work, although I waited for at least 20 secs before I clicked back. Any thing I did wrong? Jack jacky@activelifestyle.com "Power is nothing without control ----- Original Message ----- From: Dave VanAuken <dave@hawk-systems.com> To: Jacky <jacky@activelifestyle.com>; <php-general@lists.php.net> Sent: Sunday, December 03, 2000 9:32 PM Subject: RE: [PHP] credit card issue > Kill the page by expiring it. > > You may place the following in the file itself. I use it as a pluggable > function call to a lib file which is included for every application. > > > # your original file that you want to expire - **at the top** > include("includes.php"); #can use require as well > cacheDisabler(); > # no lines of display should appear before this line > # since you are sending header info... else you will > # get header already sent error */ > > > # file includes.php contains the following finction > > function cacheDisabler() { > # Begin Header for killing cache and back button reload problem > $dateHeader=time(); > $expHeader=$dateHeader-60; // set expire date for 60 seconds ago > $modHeader=$dateHeader-3600; // set modified date for an hour ago > header("Date: " . gmdate("D, d M Y H:i:s",$dateHeader)." GMT"); > // Current > Date > header("Cache-Control: no-cache, must-revalidate"); // HTTP/1.1 > header("Expires: " . gmdate("D, d M Y H:i:s",$expHeader)." GMT"); > // Date in > the past > header("Last-Modified: " . gmdate("D, d M Y H:i:s",$modHeader)." > GMT"); // > always modified > header("Pragma: no-cache"); // HTTP/1.0 > # End header > } > > > If you are using this method and allow error checking on your form (for > missing variables and such) you may want to have those variables echo'd back > (except for credit card info) into a new form for correction/entry otherwise > you are forcing the individual to reload and refill out the entire form > again. > > If that doesn't make sense, let me know. > > Dave > > > > -----Original Message----- > From: Jacky [mailto:jacky@activelifestyle.com] > Sent: Monday, December 04, 2000 10:26 AM > To: php-general@lists.php.net > Subject: [PHP] credit card issue > > > Hi all, > I did write a form in php for customer to purchase things and it contains > credit card number. I tested it and realise that after I submit the form, > and redirect the page to another page, If I click the "back" button of the > browser ( using IE 5.0 ) to come back to the form, I found that the credit > card detail was still there. > The credit card page is on secure server by the way. > Is there anyway I can solve this problem? > Any help will be greatly appreciated. > > Jack > jacky@activelifestyle.com > "Power is nothing without control >