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A relatively complete shopping cart class_PHP tutorial
- WBOYOriginal
- 2016-07-13 17:28:58829browse
Not long ago, I completed a project that required the use of a shopping cart. Considering that it may be used frequently, I encapsulated it into a class for future call. You can simply modify this class slightly and use it in your own program. For specific usage, please see asp$type=1 target=_blank>http://bigeagle.wotoo.com/article.asp?type=1 . /*****************************************************************************/ /* */ /* file type: 包含文件，建议后缀为.inc */ /* */ /* file name: cart.inc */ /* */ /* Description: 定义一个购车类 */ /* */ /* Func list : class cart */ /* */ /* author : bigeagle */ /* */ /* date : 2000/12/24 */ /* */ /* History: 2000/12/24 finished */ /* */ /*****************************************************************************/ //定义本文件常量 define("_CART_INC_" , "exists") ; /*购物车类*/ class TCart { var $SortCount; //商品种类数 var $TotalCost; //商品总价值 var $Id; //每类商品的ID（数组） var $Name; //每类商品的名称（数组） var $Price; //每类商品的价格（数组） var $Discount; //商品的折扣（数组） var $GoodPrice ; //商品的优惠价格（数组） var $Count; //每类商品的件数（数组） var $MaxCount ; //商品限量（数组） //******构造函数 function TCart() { $this->SortCount=0; session_start(); //初始化一个session session_register(sId); session_register(sName); session_register(sPrice); session_register(sDiscount); session_register(sGoodPrice) ; session_register(sCount) ; session_register(sMaxCount) ; $this->Update(); $this->Calculate(); } //********Private, update the corresponding data in the class according to the value of the session function Update() { global $sId,$sName,$sPrice,$sCount,$sDiscount,$sMaxCount,$sGoodPrice; if(!isset($ sId) or !isset($sName) or !isset($sPrice) or !isset($sDiscount) or !isset($sMaxCount) or !isset($sGoodPrice) or !isset($sCount)) return; $this- >Id =$sId; $this->Name =$sName; $this->Price =$sPrice; $this->Count =$sCount; $this->Discount = $sDiscount ; $this->GoodPrice = $sGoodPrice ; $this->MaxCount = $sMaxCount ; //Calculate the total number of goods $this->SortCount=count($sId); } //********Private, calculate the value of each type of goods based on new data And the total price of all products function Calculate() { for($i=0;$iSortCount;$i++) { /*Calculate the value of each product, if the discount is 0, it is a preferential price*/ $GiftPrice = ($this->Discount[$i] == 0 ? $this->GoodPrice : ceil($this->Price[$i] * $this->Discount[$i])/100 ); $this->TotalCost += $GiftPrice * $this->Count[$i] ; } } //**************The following is the interface function //*** Add a product // Determine whether it is already in the blue, if so, add count, otherwise add a new product // First of all Change the value of the session, and then call update() and calculate() to update the member variables function Add($a_ID, $a_Name, $a_Price, $a_Discount, $a_GoodPrice, $a_MaxCount, $a_Count) { global $sId, $sName , $sCount , $sPrice , $sDiscount , $sGoodPrice , $sMaxCount ; $k=count($sId); for ($i=0; $i= $k) { //If not, add a new product Category $sId[] = $a_ID; $sName[] = $a_Name; $sPrice[] = $a_Price; $sCount[] = $a_Count; $sGoodPrice[] = $a_GoodPrice; $sDiscount[] = $a_Discount; $ sMaxCount[] = $a_MaxCount; } $this->Update(); //Update the member data of the class $this->Calculate(); } //Remove an item function Remove($a_ID) { global $sId , $sName , $sCount , $sPrice , $sDiscount , $sGoodPrice , $sMaxCount ; $k = count($sId); for($i=0; $i Update(); $this->Calculate( ); } //Change the number of items function ModifyCount($a_i,$a_Count) { global $sCount; $sCount[$a_i] = $a_Count; $this->Update(); $this->Calculate(); } /****************************** Clear all products********************** ************/ function RemoveAll() { session_unregister(sId); session_unregister(sName); session_unregister(sPrice); session_unregister(sDiscount); session_unregister(sGoodPrice) ; session_unregister(sCount) ; session_unregister(sMaxCount) ; $this->SortCount = 0 ; $this->TotalCost = 0 ; } //是否某件商品已在蓝内，参数为此商品的ID function Exists($a_ID) { for($i=0; $iSortCount; $i++) { if($this->Id[$i]==$a_ID) return TRUE; } return FALSE; } //某件商品在蓝内的位置 function IndexOf($a_ID) { for($i=0; $iSortCount; $i++) { if($this->Id[$i]==$id) return $i; } return 0; } //取一件商品的信息，主要的工作函数 //返回一个关联数组， function Item($i) { $Result[id] = $this->Id[$i]; $Result[name] = $this->Name[$i]; $Result[price] = $this->Price[$i]; $Result[count] = $this->Count[$i]; $Result[discount] = $this->Discount[$i] ; $Result[goodprice] = $this->GoodPrice[$i] ; $Result[maxcount] = $this->MaxCount[i] ; return $Result; } //取总的商品种类数 function CartCount() { return $this->SortCount; } //取总的商品价值 function GetTotalCost() { return $this->TotalCost; } }