delete cookie in php

Question

I am trying to delete a cookie.

I am using setcookie(\"PHPSESSID\", \"\", time() - 6400); which deletes the cookie just fine.

However it is not enti

Answer 1

I had such problem for my logout code, after hard work and researches I myself finally figured it out and used javascript to solve the problem.

You can easily do that in client-side using script below, you might need to change value of path and host:

document.cookie = "PHPSESSID=; expires=Thu, 01 Jan 1970 00:00:00   UTC;path=/;host=localhost";

Answer 2

This code can solve this problem:

session_start(); // initialize session
session_destroy(); // destroy session
setcookie("PHPSESSID","",time()-3600,"/"); // delete session cookie

Answer 3

using setcookie("PHPSESSID", "", time() - 6400); expires the cookie like 2 hours ago, try using setcookie("PHPSESSID", "", 1); to expire it at epoch January 1st, 1970.

if that doesn't work you can try adding in the path like this setcookie("PHPSESSID","",time()-6400,"/");

You can try this example from http://www.php.net/manual/en/function.setcookie.php#73484 to remove all cookies, but I'm since this seems to be some sort of supercookie who knows..

// unset cookies
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, '/');
    }
}

Answer 4

See Example 1 here to delete and destroy a session:

http://php.net/manual/en/function.session-destroy.php

first unset the cookie, then destroy the session.

Answer 5

You might want to unset the $_COOKIE variable too, by adding a

unset($_COOKIE['PHPSESSID']);

in the next line. That however just affects the currently loaded page.