CodeIgniter back button after logout

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I\'m trying to stop/disable the back button functionality of the browser when a user logs out of my CodeIgniter (PHP) app. But, I think the browser is caching the page so it

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6条回答

囚心锁ツ

2020-12-04 02:31

My solution for this problem:

Check that the cookie is set will with an if.
Step parameters and call the login method of user model.
Finally charge the corresponding views.

If the cookie is not set will redirected to the login page.

if(isset($_COOKIE['ci_session'])){ 
  $user= $this->security->xss_clean($this->input->post('user'));
  $pass= $this->security->xss_clean($this->input->post('pass'));

  $result = $usrLog->loguearUsuario($user, $pass);

  if($result == TRUE){
     $data = $this->session->set_userdata('logged_in', $sessArray);
     $this->load->view('pages/admin', $data);
  }

}else{
   header('Location: login'); 
}

I hope you learn! And sorry for my english! :-)

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一个人的身影

2020-12-04 02:42

after log-out goto one page show some message like "see you soon" and after some time redirect from that to desired page this might solve your problem like below code for redirecting second time header("Refresh 3; url=home.php");

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眼角桃花

2020-12-04 02:50

Add this to prevent caching of the previous page:

header("cache-Control: no-store, no-cache, must-revalidate");
header("cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");
header("Expires: Sat, 26 Jul 1997 05:00:00 GMT");

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春和景丽

2020-12-04 02:50

You could use javascript to close the window after they logout - thus removing any ability to go back pages.

Alot of online banks do this to solve this exact issue.

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小鲜肉

2020-12-04 02:50

I think the following should help you out

1) Create a logout.php file and add the following code to it

<html>
 <head>
  <script src="http://code.jquery.com/jquery-1.10.1.min.js"></script>
<script type="text/javascript">
$( document ).ready(function() {
$( "#submit" ).trigger( "click" );
});
</script>
</head>

<body>
<form action="<?php echo base_url();?>login" method="post">
<input type="submit" id="submit" style="display: none;">
</form>
</body>
</html>

2) Modify your logout function to load a above view file logout.php

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孤街浪徒

2020-12-04 02:51

I think this could help you out, it works for me.

CodeIgniter Framework version:

$this->output->set_header('Last-Modified:'.gmdate('D, d M Y H:i:s').'GMT');
$this->output->set_header('Cache-Control: no-store, no-cache, must-revalidate');
$this->output->set_header('Cache-Control: post-check=0, pre-check=0',false);
$this->output->set_header('Pragma: no-cache');

PHP version:

header('Last-Modified:'.gmdate('D, d M Y H:i:s').'GMT');
header('Cache-Control: no-store, no-cache, must-revalidate');
header('Cache-Control: post-check=0, pre-check=0',false);
header('Pragma: no-cache');

if you are using PHP OOP put the above code in your constructor to initialize on your pages.

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