Help me with session!!!

[njwan]

Hey!
I try to work with php_session, when I login and after that I click logout (all session avarible destroy) but when I click backk button on the tool bar of browser the web page at the first time is still can display but all execute query can't execute!
I would like when I click back button can be show the first page, I can I do it?

[bubblenut]

Near the start of the page

if(!isset($_SESSION['session_var']) || empty($_SESSION['session_var'])) {
  header 'Location: index.php';
  exit();
}

HTH
Bubble