how to delete all cookies of my website in php

04/21/2020 01:00:01

I'm wondering if I can delete all my website's cookies when a user click on logout, because I used this as function to delete cookies but it isn't work properly:

setcookie("user",false);

Is there a way to delete one domain's cookies in PHP?

Verified Answer (169 Votes)

02/22/2010 16:40:11

PHP setcookie()

Taken from that page, this will unset all of the cookies for your domain:

// 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, '/');
    }
}

http://www.php.net/manual/en/function.setcookie.php#73484

169

Answer #2 (40 Votes)

02/22/2010 16:41:25
$past = time() - 3600;
foreach ( $_COOKIE as $key => $value )
{
    setcookie( $key, $value, $past, '/' );
}

Even better is however to remember (or store it somewhere) which cookies are set with your application on a domain and delete all those directly.
That way you can be sure to delete all values correctly.

40

Answer #3 (16 Votes)

07/08/2012 23:24:44

I agree with some of the above answers. I would just recommend replacing "time()-1000" with "1". A value of "1" means January 1st, 1970, which ensures expiration 100%. Therefore:

setcookie($name, '', 1);
setcookie($name, '', 1, '/');
16
3
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