Can Not Delete Session And Cookie - php

Question

Can Not Delete Session And Cookie
I am new to PHP sessions.
I have used cookies plenty in the past.
I can't seem to get rid of this cookie - no matter what I do!
I seem to be able to clear the session - but the cookie remains.
I have tried all of these: .. and MORE:
<?php
// Initialize the session.
// If you are using session_name("something"), don't forget it now!
session_start();
// Unset all of the session variables.
$_SESSION = array();
// If it's desired to kill the session, also delete the session cookie.
// Note: This will destroy the session, and not just the session data!
if (ini_get("session.use_cookies")) {
$params = session_get_cookie_params();
setcookie(session_name(), '', time() - 42000,
$params["path"], $params["domain"],
$params["secure"], $params["httponly"]
);
}
// Finally, destroy the session.
session_destroy();
if (isset($_SERVER['HTTP_COOKIE'])) {
$cookies = explode(';', $_SERVER['HTTP_COOKIE']);
foreach($cookies as $cookie) {
$parts = explode('=', $cookie);
$name = trim($parts[0]);
setcookie($name, '', time()-1000);
setcookie($name, '', time()-1000, '/');
}
}
?>
above from: http://php.net/manual/en/function.session-destroy.php
<script>
var cookies = document.cookie.split(";");
for (var i = 0; i < cookies.length; i++)
eraseCookie(cookies[i].split("=")[0]);
</script>
What would be some of the reasons why the cookies does not delete?

Answer 1

This is because of the working of a session in php. What happens is when you start a session a unique string is generated which acts as the cookie value for the session . All the data that you are storing inside the session are stored in a file corresponding to the unique string. Now when you destroy a session it does not destroy the session string but rather than that it destroys the values corresponding to that string that is stored on the server.
So even though the cookies are there but there is no data corresponding to it and hence for the next request the session would effectively be empty.