WordPress Cookies

 WordPress Cookies

Set: 

add_action('init', function() {
    if (!isset($_COOKIE['my_cookie'])) {
        setcookie('my_cookie', 'some default value', strtotime('+1 day'));
    }
});

Get:

$cookieValue = $_COOKIE['my_cookie'];

Delete:

setcookie('my_cookie', null, strtotime('-1 day'));