php - How do I prevent users from being able to "back" into page from a destroyed session? -

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i have created login functionality on site, , when click logout page redirects , destroys session, fine.

however when click button can still view page. if refresh it, redirect me login session has been destroyed , user not have access page expected.

is there way can prevent user being able view page when click button?

try perform 

header( 'location: http://myserbver.com/anurl' );

after did destroy session. makes returning previous page @ least bit more complicated. go back, user has click twice.

if you'd make more complicated, perform

header( 'location: http://myserbver.com/myscript.php?oncemore=yes' );

and if myscript.php finds

 isset( $_get[ 'oncemore' ] )

then perform 

 header( 'location: http://myserbver.com/myscript.php' );

once again.

myscript.php:

<?php    // force browser redirect once again   if ( isset( $_get[ 'oncemore' ] ) {     header( 'location: http://myserbver.com/myscript.php' );   }    // else continue normal stuff.  ...

additionally, might of instruct browser not cache pages:

header("cache-control: no-cache, must-revalidate"); // http/1.1 header("expires: sat, 26 jul 1997 05:00:00 gmt");   // date in past

please note, browser may or may not respect header. thus, need send further cache related headers.


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