1. ?? ?? ??? ??? ????.

a ?? ?? ??:

<a href="shoppingcart.php?a=delone&key=<?php echo $key ?> " onclick=" "> ?? ??

?? ??? ?? ??:

<a href="shoppingcart.php?a=empty">???? ???</a>

???? ?? ? ?????:

<?php
//取消購(gòu)物車(chē)?yán)锏囊患唐?elseif($a=="delone"){
    $key=$_GET["key"];
    $shoppingcart=unserialize($_COOKIE["shoppingcart"]);
    unset($shoppingcart[$key]);
    if(empty($_COOKIE)){
        setcookie($shoppingcart,"",time()-3600);
    }else{
        setcookie("shoppingcart",serialize($shoppingcart));
    }
    header("location:shoppingcart.php");
    exit();
}

3, ??? ??? ????