On 11/3/07, tanzeem <tanzeem.mb@xxxxxxxxx> wrote: > > > i have 3 php files pag1.php,page2.php,page3.php > I posted to page2.php from page1.php > Then again posted from page2.php to page3.php > But when i click th back button from page3.php in IE 6.0 it displays > a page cannot be displayed error. > When i tried the same with Firefox it displayed the page2.php correctly. > Can anyone suggest a solution to thsi problem im surprised you dont get a warning in firefox as well. when you send a request to the server via HTTP POST, subsequent retransmission of the same request causes browsers to generate an warning. the reason is because HTTP POST is designed for requests that will alerter, add, or destroy data on the server; typically in a database these days, whereas a get request is just for viewing a resource. think of a site where you make a purchase. on the last page of the checkout process, your sensitive data is posted to the server, then if you try pressing back the warning is raised by the browser. this is so your card is not accidentally billed twice, and usually you will see messages on the page that say dont press back or dont send this page twice. so if youre pages constitute a request that inovokes a change in the data on the server, they are probly fine already. otherwise switch the request method to get, and youll be able to use the back button w/o warning. -nathan
