unable to unset session id in php

Question

I cannot properly unset the session id of my page unless I close the browser and reopen it. I tried to set the $_SESSION = null; and to forcefully set the cookie to a negative value setcookie('cookiename', '', time()-3600); but no results yet.

<body>

<?php
session_start();
// Unset all of the session variables.
$_SESSION = null;
setcookie('cookiename', '', time()-3600);
session_destroy();

print "SESSION has been destroyed - all session data deleted";
?>

back to home page

</body>

sometimes you just need to clear your cache/cookies from your browser. — Roljhon, Mar 12 '17 at 17:27
i found the issue: instead of setcookie('cookiename', '', time()-3600); the right line of code is: setcookie(session_name(), '', time()-3600); — JohnSnow, Mar 12 '17 at 18:18
Use `session_regenerate_id()` for generating a new session id after destroying the session — NineBerry, Mar 12 '17 at 18:19
@NineBerry I tried and it did not work. As i just said the fix was session_name() . Thanks anyway — JohnSnow, Mar 12 '17 at 18:23

kuldeep singh · Answer 1 · 2017-03-12T17:59:58.973

0

replace lab5destroy.php with below code

<body>
<?php
ini_set('session.use_strict_mode', 1);
session_start();
// Unset all of the session variables.
session_regenerate_id();
session_destroy();
print "SESSION has been destroyed - all session data deleted";
?>
<hr>
<a href="http://localhost/lab5.php" rel="nofollow noreferrer">back to home page</a>
</hr>
</body>

edited Mar 12 '17 at 17:59

answered Mar 12 '17 at 17:25

kuldeep singh

31
4

if I use $_SESSION = array(); nothing changes – JohnSnow Mar 12 '17 at 17:39
this is the third time you are changing your answer. I am reporting you for moderator intervention. I already said that the fix was session_name() instead of 'cookiename' – JohnSnow Mar 12 '17 at 18:27
I tried that before and it was not working. The only fix was session_name() instead of 'cookiename' . – JohnSnow Mar 12 '17 at 18:30
but i copy ur code in my system and it work fine after changes i made – kuldeep singh Mar 12 '17 at 18:31

score 0 · Answer 2 · answered Mar 13 '17 at 02:40

0

session_start();
session_unset();
session_destroy();

answered Mar 13 '17 at 02:40

Vbudo

405
4
9

score 0 · Accepted Answer · answered Mar 20 '17 at 16:43

0

The fix was session_name() instead of 'cookiename'

answered Mar 20 '17 at 16:43

JohnSnow

163
4
16

unable to unset session id in php

3 Answers3