php 面向对象(不知道取什么名字)

<?php 

/**
 * @version $Id$
 * @create 2013-1-27 21:47:50 By xjiujiu
 * @description HongJuZi Framework
 * @copyRight Copyright (c) 2011-2012 http://www.xjiujiu.com.All right reserved
 */
	@header('Content-Type: text/html, charset=utf-8;');
    //开启session
    @session_start();
    include_once('./hongjuzi/hhcart.php');
    //php 按行执行这里根据传来的action参数去调用其中的方法。
    //其实柑橘在java中也是一样的.
    //在servlet中不也是通过指定方法才去调用doget和dopost方法么。
    //只不过这个是在method中指定的。
    //如果要调用其他方法，也要自己去实例化的。
    //而在struts2中，应该是用!去分割的。
    $ac     = $_GET['ac'];
    $cart   = new HHCart();
	switch($ac) {
        case 'list':
			try{
					
				$list = $cart->getList();
				foreach($list as $key => $value){
					$num = $list[$key]['total'];
					$obj = $list[$key]['info'];
                                        //stripslashes(String)去除斜杠
					$price = stripslashes($obj['price']);
					$count += intval($num * intval($price));
					}
				//echo json_encode(array('list' => $cart->getList()));
              //建立数组，并复制给$orderList引用.期中list应该是一个对象数组。
				$orderList = array('list' => $cart->getList(),'count'=>$count);
				//array_push($orderList);
                                //转为json格式
				echo json_encode($orderList);

			}catch(Exception $ex){
				echo "失败";
			}
			break;
        case 'add': {
            try {
                //接受数据，并存为个一个数组。
                $productInfo    = array(
                    'id' => $_POST['productId'],
                    'name' => $_POST['productName'],
                    'price' => $_POST['price'],
                    'type' => $_POST['productType']
                );
                //打印调试
				var_dump($productInfo);
			    $cart->add($productInfo);
                echo json_encode(array('succeed' => true));
            } catch(Exception $ex) {
                echo json_encode(array(
                    'succeed' => 'false',
                    'info' => '貨物添加失敗！'
                ));
            }
            break;
        }
        case 'sub': break;
        case 'destroy': break;
        default: break;
    }
?>

HHcart类

<?php 

/**
 * @version $Id$
 * @create 2013-1-27 21:47:50 By xjiujiu
 * @description HongJuZi Framework
 * @copyRight Copyright (c) 2011-2012 http://www.xjiujiu.com.All right reserved
 */

/**
 * 購物車類 
 * 
 * @desc
 * 
 * @author xjiujiu <xjiujiu@foxmail.com>
 * @package None
 * @since 1.0.0
 */
class HHCart
{
    
    /**
     * @var Map $_cart 購物車容器
     */
    protected $_cart;

    /**
     * @var String $_cartId 當前的購物車ID
     */
    protected $_cartId;

    /**
     * @var String $_priceParam 單價名稱
     */
    protected $_priceParam;

    /**
     * @var int $_productIdParamName 當前的產品ID變量名
     */
    protected $_productIdParamName;

    /**
     * @var Mix $_productId 當前的產品ID
     */
    protected $_productId;


    /**
     * 構造函數 
     * 
     * @desc
     * 
     * @author xjiujiu <xjiujiu@foxmail.com>
     * @access public
     * @param String $price 當前的價格變量名稱，默認：price
     * @param String $productIdParamName 產品編號變量
     */
    public function __construct($price = 'price', $productIdParamName = 'id')
    {
        $this->_getCurCart();
        $this->_cartId          = session_id();
        $this->_productInfo     = null;
        $this->_priceParam      = $price;
        $this->_productIdParamName  = $productIdParamName;
    }

    /**
     * 得到當前的購物車容器
     * 
     * @desc
     * 
     * @author xjiujiu <xjiujiu@foxmail.com>
     * @access protected
     */
    protected function _getCurCart()
    {	
        if(!isset($_SESSION['HHCART']) || !is_array($_SESSION['HHCART'])) {
            $_SESSION['HHCART']     = array();
        }
        $this->_cart    = &$_SESSION['HHCART'];
		
    }

    /**
     * 添加貨物 
     * 
     * @desc
     * 
     * @author xjiujiu <xjiujiu@foxmail.com>
     * @access public
     */
    public function add($productInfo)
    {
		$productId   = $productInfo[$this->_productIdParamName];
        if(!isset($this->_cart[$this->_cartId])) {
            $this->_cart[$this->_cartId]    = array();
        }
		
		
	    if(isset($this->_cart[$this->_cartId][$productId])) {
            $this->_cart[$this->_cartId][$productId]['total'] ++;
        } else {
            $this->_cart[$this->_cartId][$productId]['total']    = 1;
            $this->_cart[$this->_cartId][$productId]['info']     = $productInfo;
        }
	}

    /**
     * 減少貨物 
     * 
     * @desc
     * 
     * @author xjiujiu <xjiujiu@foxmail.com>
     * @access public
     * @return void
     * @throws none
     */
    public function sub($productId)
    {
        if(isset($this->_cart[$this->_cartId])) {
            if(isset($this->_cart[$this->_cartId][$productId])) {
                if(1 != $this->_cart[$this->_cartId][$productId]['total']) {
                    $this->_cart[$this->_cartId][$productId]['total'] -= 1;
                } else {
                    unset($this->_cart[$this->_cartId][$productId]['total']);
                }
            }
        }
    }


    /**
     * 清除貨物 
     * 
     * @desc
     * 
     * @author xjiujiu <xjiujiu@foxmail.com>
     * @access public
     * @return void
     * @throws none
     */
    public function delete($productId)
    {
        if(isset($this->_cart[$this->_cartId])) {
            if(isset($this->_cart[$this->_cartId][$productId])) {
                unset($this->_cart[$this->_cartId][$productId]);
            }
        }
    }

    /**
     * 更新購物車 
     * 
     * @desc
     * 
     * @author xjiujiu <xjiujiu@foxmail.com>
     * @access public
     * @return List 得到當前購物車里的內容
     */
    public function getList()
    {
        return $this->_cart[$this->_cartId];
    }

    /**
     * 清空 
     * 
     * @desc
     * 
     * @author xjiujiu <xjiujiu@foxmail.com>
     * @access public
     * @return void
     * @throws none
     */
    public function destroy()
    {
        unset($this->_cart[$this->_cartId]);
    }

    /**
     * 結賬 
     * 
     * @desc
     * 
     * @author xjiujiu <xjiujiu@foxmail.com>
     * @access public
     */
    public function count()
    {
        $total  = 0;
        foreach($this->_cart[$this->_cartId] as $product) {
            $total  += intval($product['total']) * intval($product['info'][$this->_priceParam]);
        }

        return $total;
    }

}

?>