return $_COOKIE['user_id'];
}
return -1;
}
$action = isset($_REQUEST['action']) ? $_REQUEST['action'] : "";
switch ($action) {
case "login":
$username = isset($_POST['username']) ? $_POST['username'] : null;
$password = isset($_POST['password']) ? $_POST['password'] : null;
$error = null;
if (isset($username) && isset($password)) {
$user_id = checkPassword($username, $password);
if ($user_id == -1) {
$error = "Incorrect username/password.";
} else {
addToCookie("user_id", $user_id);
}
} else {
$error = "Username or password is empty.";
}
if (isset($error)) {
echo $error . " Try again!<br />";
}
break;
case "logout":
unsetCookie("user_id");
$user_id = -1;
break;
default:
$user_id = loggedInUser();
}
<?php
/**
* Cookie example
*/
function addToCookie($name, $value)
{
// expiration time is set to a month (60 sec * 60 min * 24 hours * 30 days)
$expire = time() + 60 * 60 * 24 * 30;
// setcookie() must be called before any output is sent to the browser
setcookie($name, $value, $expire);
}
function getFromCookie($name)
{
echo $name . ": ";
if (isset($_COOKIE[$name])) {
echo $_COOKIE[$name];
} else {
echo "[not set]";
}
echo "<br />";
}
// 1) first, uncomment this to store in the cookie
addToCookie("name", "Alex");
addToCookie("selection", "3");
// 2) next, comment out block 1) and uncomment block 2) to read out the values
//getFromCookie("name");
//getFromCookie("selection");
