gistfile1.php

    $value = array_key_exists('test', $_COOKIE) ? $_COOKIE['test'] : 0;
    $value++;
    setcookie('test', $value);
    var_dump($value);
    
    
    session_start();
    $value = array_key_exists('test2', $_SESSION) ? $_SESSION['test2'] : 0;
    $value = $value ? $value : 0;
    $value++;
    $_SESSION['test2'] = $value;
    var_dump($value);
    session_write_close();