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