如何把二维数组存储到cookie中呢？
先把数组转换成字符串，要用时再去掉斜线（为什么会出现斜线呢？）转换回来

a.php
<?
$cart_info[0][0] = "1123";
$cart_info[1][0] = "5334521";
$cart_info[1][2] = "df";
$cart_info[4][2] = "fefe";

setcookie("xia",serialize($cart_info));
?>

b.php
<?
$other = StripSlashes($_COOKIE['xia']);
print_r(unserialize($other));
?>