cart.php

<?
  /****************************************
  名称:  cart.php
    作者:  psdshow
                 联系方式: psdshow@yahoo.com.cn
    版本号:  1.0
  版权:
    编写日期: 2005年12月11日
    文件描述: 用于购物车的实现,只用了一个SESSION,可以通过$Attribe扩展
    修改日志:
  *****************************************/
class Cart{
var $Item=array();
//初始化
function Cart($SessionName){
        $this->Item= &$_SESSION[$SessionName];
        }
//增加一个商品
function AddItem($ID,$Name,$Count,$Price,$Image,$Description,$Attribe){
        if(!isset($this->Item[$ID])){
          $this->Item[$ID]=array('Name'=>$Name,
                                 'Count'=>intval($Count),
                                 'Price'=>$Price,
                                 'Image'=>$Image,
                                 'Description'=>$Description,
                                 'Attribe'=>$Attribe
                                 );
          }
          else{
              $TMPCount=$this->Item[$ID]['Count']+intval($Count);
              $this->Item[$ID]=array('Name'=>$Name,
                                     'Count'=>$TMPCount,
                                     'Price'=>$Price,
                                     'Image'=>$Image,
                                     'Description'=>$Description,
                                     'Attribe'=>$Attribe
                                     );
              }
        }
//删除一个商品
function DeleteItem($ID){
         unset($this->Item[$ID]);
         }
//修改一个商品
function ModifyItem($ID,$Count){
        $this->Item[$ID]['Count']=intval($Count);
        }
function ModifyAttribe($ID,$Attribe){
        $this->Item[$ID]['Attribe']=$Attribe;
        }
//取得总价值
function GetTotalCost(){
 if(is_array($this->Item)){
          foreach($this->Item as $K=>$V){
                 $Total+=$this->Item[$K]['Count']*$this->Item[$K]['Price'];
                 }
          }
        return $Total;
        }
//返回全部商品
function GetAllItem(){
        return $this->Item;
        }
//清空购物篮
function ClearItem(){
        $this->Item='';
        }
}
?>