基于CI(CodeIgniter)框架实现购物车功能的方法

　　本文实例讲述了基于CI(CodeIgniter)框架实现购物车功能的方法。分享给大家供大家参考，具体如下：

　　在商城项目中，购物车是非常重要的一环，此处留下源码，留作笔记！！！

　　话不多说，往下看:

　　1. 源代码

　　 <?php defined(BASEPATH) OR exit(No direct script access allowed); class cart extends Home_Controller { private $info = array(); #前台提交数据 private $specData = array(); #规格信息 private $prodData = array(); #货品组合信息 private $cartData = array(); #购物车入库数据 /** * 构造函数 */ public function __construct() { parent::__construct(); $this->load->model(goodsModel,goods); $this->load->model(productModel,product); $this->load->model(goodsAttrModel,goodsAttr); } /** * [购物车]数据添加 */ public function cartAdd() { #接收购物车提交数据 $this->info = $this->input->post(); // $this->ajaxReturn($this->info); #1.验证商品库存、货品库存 $this->checkGoodsNumber(); #2.查询规格名称、价格 $this->getSpecData(); #3.组装购物车添加de数据 $cartData = $this->setCartData(); p(json_decode($this->input->cookie(cart),true)); # 一、判断是否登录 if(!UID){ //未登录 数据存入Cookie中 //1:获取cookie中的购物车数据 $cookieCartData = $this->input->cookie(cart); //2:判断cookie中数据是否为空 if(empty($cookieCartData)){ //2-1:为空则表示用户没有添加过购物车 //2-1-1.设置Key-->生成购物车数据 $key = $cartData[goods_id].-.$cartData[product_id]; $cookieCart = array($key => $cartData); //2-1-2.设置购物车返回值(商品数量、总价) $this->setCartReturn(1,$cartData[goods_price]); //2-1-3.设置Cookie存储购物车数据 }else{ //2-2:不为空 表示用户添加过购物车 //2-2-1.追加购物数据 $cookieCart = $this->addCartData($cartData,json_decode($cookieCartData,true)); //2-2-2.设置购物车返回值(商品数量、总价) $this->setCartReturn(count($cookieCart),array_sum(array_column($cookieCart, goods_price))); } //3:设置Cookie存储购物车数据 setCookie(cart,json_encode($cookieCart),LEFT_TIME,/); }else{ //已登录 数据存入数据库 } //返回购物车提示数据 $this->ajaxReturn($this->msg); } /** * 验证商品库存 */ public function checkGoodsNumber() { $this->goods->map = array( goods_id => $this->info[goods_id], goods_number >= => $this->info[buy_number], ); $this->goods = $this->goods->find(goods_id,goods_name,goods_sn,goods_img,shop_price); if(!$this->goods){ $this->msg[msg] = 商品库存不足; $this->ajaxReturn($this->msg); } #验证货品库存 $this->product->map = array( goods_id => $this->info[goods_id], product_attr => $this->info[prod_attr], product_number >= => $this->info[buy_number], ); $this->prodData = $this->product->find(); if(!$this->prodData){ $this->msg[msg] = 货品库存不足; $this->ajaxReturn($this->msg); } return true; } /** * 组合规格名称、价格 */ public function getSpecData() { $this->goodsAttr->map = inToType(explode(, $this->info[prod_attr]),goods_attr_id); $goodsAttrInfo = $this->goodsAttr->select(goods_attr_value,goods_attr_price); $this->specData[product_attr_value] = implode(, array_column($goodsAttrInfo, goods_attr_value)); $this->specData[product_price] = array_sum(array_column($goodsAttrInfo,goods_attr_price)); # 返回规格信息 $this->specData } /** * 组装购物车添加的数组 */ public function setCartData() { $this->cartData = array( product_id => $this->prodData[product_id], product_attr => $this->prodData[product_attr], buy_number => $this->info[buy_number], goods_price => $this->info[shop_price], goods_sum => $this->info[shop_price] * $this->info[buy_number], product_price => , product_attr_value => , uid => UID, ); $this->cartData = array_merge($this->cartData,$this->goods); #若存在规格【添加规格信息】 if(!empty($this->info[prod_attr])){ $this->cartData[product_price] = $this->specData[product_price]; $this->cartData[product_attr_value] = $this->specData[product_attr_value]; } return $this->cartData; # 购物车 添加的总数据 $this->cartData; } /** * 设置购物车返回提示数据 * @param [商品数量,总价] */ public function setCartReturn($number,$prices) { $this->msg[code] = self::STATUS_ON; $this->msg[data] = array( number => $number, prices => $prices, ); } /** * 购物车 新添加数据 * @param [新数据,原购物车数据] */ public function addCartData($newData,$oldData) { #组合Key $key = $newData[goods_id].-.$newData[product_id]; // #判断购物车中是否有该商品 if(isset($oldData[$key])){ //1.有 合并商品数量、价格 $oldData[$key][buy_number] = $oldData[$key][buy_number] + $newData[buy_number]; $oldData[$key][goods_price] = $newData[goods_price]; $oldData[$key][goods_sum] = $oldData[$key][buy_number] * $oldData[$key][goods_price]; }else{ //2.没有 追加新商品 $oldData[$key] = $newData; } #返回购物车数据 return $oldData; } } ?>

　　2. 数据库

　　 CREATE TABLE `shop_goods` ( `goods_id` int(10) unsigned NOT NULL AUTO_INCREMENT, `goods_name` varchar(255) NOT NULL, `type_id` int(11) DEFAULT NULL, PRIMARY KEY (`goods_id`) ) ENGINE=InnoDB AUTO_INCREMENT=10 DEFAULT CHARSET=utf8; CREATE TABLE `shop_product` ( `product_id` int(11) unsigned NOT NULL AUTO_INCREMENT, `goods_id` int(11) NOT NULL, `goods_price` decimal(10,2) NOT NULL, `goods_num` int(11) NOT NULL, `goods_sn` varchar(50) NOT NULL, `goods_attr_id` varchar(100) NOT NULL, PRIMARY KEY (`product_id`) ) ENGINE=InnoDB AUTO_INCREMENT=18 DEFAULT CHARSET=utf8; CREATE TABLE `shop_goods_attr` ( `goods_attr_id` int(10) unsigned NOT NULL AUTO_INCREMENT, `goods_id` int(11) NOT NULL, `attr_id` int(11) NOT NULL, `attr_value` varchar(255) NOT NULL, PRIMARY KEY (`goods_attr_id`) ) ENGINE=InnoDB AUTO_INCREMENT=126 DEFAULT CHARSET=utf8;

　　CI购物车总结完毕！！！

　　更多关于CodeIgniter相关内容感兴趣的读者可查看本站专题：《codeigniter入门教程》、《CI(CodeIgniter)框架进阶教程》、《php优秀开发框架总结》、《ThinkPHP入门教程》、《ThinkPHP常用方法总结》、《Zend FrameWork框架入门教程》、《php面向对象程序设计入门教程》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》

　　希望本文所述对大家基于CodeIgniter框架的PHP程序设计有所帮助。