how to clear login session in php

Question

Please help me out to clear login session.

For example

If I am a user of a particular & I want to check my updates. So I used my user id & password to login to the particular page.
After checking my updates I logged out from the page. After logging out, I used back button in the browser to go back to previous session.
Automatically enters into my page without giving any login details. To prevent from entering into page without any login details the session should be cleared. So help me out to clear the session.

Which language are you using? You will need server side coding to clear the session. — Gaurav Bhor, Nov 04 '13 at 11:00
are you sure you're talking about javascript / html / css ? maybe it's about php ? — Asenar, Nov 04 '13 at 11:02

score 0 · Answer 1 · answered Nov 04 '13 at 11:00

This is a client side problem. If you press back button in browser, the browser loads the previously stored cached page. Better way is, You should write a javascript function in login page which invokes logout.jsp whenever loaded first time or through back button.

score 0 · Answer 2 · edited May 23 '17 at 10:32

0

You need to set the cache control header on your pages to ensure they are not cached. Since Have a look at the following question which goes into detail about how to set the cache header correctly in different languages - How to control web page caching, across all browsers?

edited May 23 '17 at 10:32

Community

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answered Nov 04 '13 at 11:12

juju

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score 0 · Answer 3 · answered Nov 04 '13 at 11:17

To clear session in php, you can call a script logout.php containing the following :

<?php
session_start();
$_SESSION = array();
// PHPSESSID is default name, but you may have a custom.
setcookie("PHPSESSID", '', time() - 1, '/');
}

See a more complete example at

http://fr.php.net/session_destroy

how to clear login session in php

3 Answers3