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php利用COOKIE制作网站购物车
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function addcart($goods_id,$goods_num){
$cur_cart_array = unserialize(stripslashes($_COOKIE['shop_cart_info']));
if($cur_cart_array==""){
$cart_info[0][] = $goods_id;
$cart_info[0][] = $goods_num;
setcookie("shop_cart_info",serialize($cart_info));
}elseif($cur_cart_array<>""){
//返回数组键名倒序取最大
$ar_keys = array_keys($cur_cart_array);
rsort($ar_keys);
$max_array_keyid = $ar_keys[0]+1;
//遍历当前的购物车数组
//遍历每个商品信息数组的0值，如果键值为0且货号相同则购物车存在相同货品
foreach($cur_cart_array as $goods_current_cart){
foreach($goods_current_cart as $key=>$goods_current_id){
if($key == 0 and $goods_current_id == $goods_id){
echo "<script language=JavaScript>";
echo "if(confirm('购物车已经有该商品，继续购物按----确定!查看购物车按----取消!'))";
echo "{history.go(-1)}";
echo "else{window.location.href='xqs_cart.php'}";
echo "</script>";
exit();
}
}
}
$cur_cart_array[$max_array_keyid][] = $goods_id;
$cur_cart_array[$max_array_keyid][] = $goods_num;
setcookie("shop_cart_info",serialize($cur_cart_array));
}
}
//从购物车删除
function delcart($goods_array_id){
$cur_goods_array = unserialize(stripslashes($_COOKIE['shop_cart_info']));
//删除该商品在数组中的位置
unset($cur_goods_array[$goods_array_id]);
setcookie("shop_cart_info",serialize($cur_goods_array));
}
//修改购物车货品数量
function update_cart($up_id,$up_num,$goods_ids){
//先清空cookie,以便重新设置，传递过来三个数组参数 1数组的标识 2商品数量数组 3商品编号数组
//如果不清空cookie则无法处理数量为零的商品
setcookie("shop_cart_info","");
foreach($up_id as $song){
//先返回数组当前单元；再把指针向下移动一个位置
$goods_nums = current($up_num);
$goods_id = current($goods_ids);
next($up_num);
next($goods_ids);
//当商品数量为空的时候，注销此处的数组值并用continue 2 语句避开下面的操作，继续做foreach循环
while($goods_nums == 0){
unset($song);
continue 2;
}
$cur_goods_array[$song][0] = $goods_id;
$cur_goods_array[$song][1] = $goods_nums;
}
setcookie("shop_cart_info",serialize($cur_goods_array));
}
$cur_cart_array = unserialize(stripslashes($_COOKIE['shop_cart_info']));
if($cur_cart_array==""){
$cart_info[0][] = $goods_id;
$cart_info[0][] = $goods_num;
setcookie("shop_cart_info",serialize($cart_info));
}elseif($cur_cart_array<>""){
//返回数组键名倒序取最大
$ar_keys = array_keys($cur_cart_array);
rsort($ar_keys);
$max_array_keyid = $ar_keys[0]+1;
//遍历当前的购物车数组
//遍历每个商品信息数组的0值，如果键值为0且货号相同则购物车存在相同货品
foreach($cur_cart_array as $goods_current_cart){
foreach($goods_current_cart as $key=>$goods_current_id){
if($key == 0 and $goods_current_id == $goods_id){
echo "<script language=JavaScript>";
echo "if(confirm('购物车已经有该商品，继续购物按----确定!查看购物车按----取消!'))";
echo "{history.go(-1)}";
echo "else{window.location.href='xqs_cart.php'}";
echo "</script>";
exit();
}
}
}
$cur_cart_array[$max_array_keyid][] = $goods_id;
$cur_cart_array[$max_array_keyid][] = $goods_num;
setcookie("shop_cart_info",serialize($cur_cart_array));
}
}
//从购物车删除
function delcart($goods_array_id){
$cur_goods_array = unserialize(stripslashes($_COOKIE['shop_cart_info']));
//删除该商品在数组中的位置
unset($cur_goods_array[$goods_array_id]);
setcookie("shop_cart_info",serialize($cur_goods_array));
}
//修改购物车货品数量
function update_cart($up_id,$up_num,$goods_ids){
//先清空cookie,以便重新设置，传递过来三个数组参数 1数组的标识 2商品数量数组 3商品编号数组
//如果不清空cookie则无法处理数量为零的商品
setcookie("shop_cart_info","");
foreach($up_id as $song){
//先返回数组当前单元；再把指针向下移动一个位置
$goods_nums = current($up_num);
$goods_id = current($goods_ids);
next($up_num);
next($goods_ids);
//当商品数量为空的时候，注销此处的数组值并用continue 2 语句避开下面的操作，继续做foreach循环
while($goods_nums == 0){
unset($song);
continue 2;
}
$cur_goods_array[$song][0] = $goods_id;
$cur_goods_array[$song][1] = $goods_nums;
}
setcookie("shop_cart_info",serialize($cur_goods_array));
}