购物车代码

<?php
/**
* 购物车
*
* @copyright Copyright (c) 2006 - 2008 coderhome.net
* @author 志凡 <[e-mail]>
* @package Model
* @version v0.1
*/

class ModelCart extends Model {

/**
* 构造函数
* @param Object $db 数据查询类
* @access public
* @return void
*/
function __construct($query=null) {
parent::__construct($query);
session_start();
}

function add($productInfo) {
$product = new ModelProduct();
$productItem = $product->getInfo($productInfo['id']);
$info = array(
'id' => $productInfo['id'],
'product_name' => $productInfo['product_name'],
'attribute' => $productInfo['attribute'],
'price' => $productInfo['price'],
'sn' => $productItem['sn'],
'photoUrl' => CFG_URL . 'data/product/'.$productItem['photo'],
'number' => 1,
);
$_SESSION['cartInfo'][$productInfo['id'].'_'.$productInfo['attribute']] = $info;
}

function changeNumber($id,$number) {
$_SESSION['cartInfo'][$id]['number'] = $number;
}
static function count() {
session_start();
return count($_SESSION['cartInfo']);
}

function getAll() {
$items = $_SESSION['cartInfo'];
$result = array();
foreach ($items as $key => $item) {
$attrs = explode('||',$item['attribute']);
foreach ($attrs as $attr) {
$i = explode('=',$attr);
$n = explode(',',$i[1]);
$item[$i[0]] = $n[1];
$item[$i[0].'_id'] = $n[0];
}
$item['prices'] = $item['price']*$item['number'];
$item['cart_id'] = urlencode($item['id'].'_'.$item['attribute']);
$result[] = $item;
}
return $result;
}
function getCount() {
$items = $this->getAll();
$count = 0;
foreach ($items as $key => $item) {
$count += $item['prices'];
}
return $count;

}
function clear() {
$_SESSION['cartInfo'] = array();
}

function delete($id) {
unset($_SESSION['cartInfo'][$id]);
}

}
?>

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