php cookie

<?php
    /*setcookie('guozu','guozu' , time() + 3600);
    setrawcookie('gunduzi','gunduzi',time() + 3600);*/
    
    //echo $_COOKIE['guozu'] . '    ';
    //echo $_COOKIE['gunduzi'];
    
    //setcookie('gunduzi','',time()+ 3600);
    //setcookie('guozu','');
?>