PHP的饼干问题

Question

I have code, echo shows nothing?? Why

<?php
$szukane = $_POST['szukane'];
$tablica = Array('a' => 'az', 'b' => 'sx');
setcookie('tablica', serialize($tablica));
$un_tablica = unserialize($_COOKIE['tablica']);
echo $un_tablica['a'];
?>

Answer 1

From the manual :

Common Pitfalls:

• Cookies will not become visible until the next loading of a page that the cookie should be visible for. To test if a cookie was successfully set, check for the cookie on a next loading page before the cookie expires.

Answer 2

I have to change this:

$un_tablica = unserialize($_COOKIE['tablica']);

for this:

$un_tablica = unserialize(StripSlashes($_COOKIE['tablica']);