Session,Cookie

Cookie

<?php
unset($username);
if ($_COOKIE['login']) {
    list($c_username,$cookie_hash) = split(',',$_COOKIE['login']);
    if (md5($c_username.$secret_word) == $cookie_hash) {
        $username = $c_username;
    } else {
        print "You have sent a bad cookie.";
    }
}
 
if ($username) {
    print "欢迎, $username.";
} else {
    print "欢迎, 游客.";
}
?>

Session