<?php

/**
* 根据Cookie值对购物车商品数量和总价格调用
*/
require("class/connect.php");

$totalProducts = 0; //购物车商品总数
$totalPrice = 0.0; //购物车商品总价

// |77,243|2!|77,237|3!
$cookieString = explode("!",$_COOKIE['zeuqcmybuycar']);

try{
//遍历商品
for($i = 0; $i < count($cookieString)-1; $i++){
$priceAndNumber = explode("|",$cookieString[$i]);
$thisNum = $priceAndNumber[2]; //当前商品的数量
$thisId = explode(",",$priceAndNumber[1]);
$thisId = $thisId[1]; //当前商品的ID
$thisPrice = this_price($thisId); //当前商品价格

$totalPrice += $thisPrice * $thisNum; //购物车商品总价累加
$totalProducts += $thisNum; //购物车商品总数累加
}

echo "document.write("".displayResultJs($totalPrice,$totalProducts)."")"; //显示结果Js形式输出

}catch (Exception $e){
echo $e->getMessage();
}


/**计算商品价格*/
function this_price($id){
$connect = connectDB();
$query = "select price from phome_ecms_news where id = ".$id;
if(!$connect){
throw new Exception("数据库链接不成功,请检查!");
}
if(!$result = $connect -> query($query)){
throw new Exception("查询失败!");
}
$row = $result -> fetch_assoc();

return $row['price'];
}

/**链接数据库*/
function connectDB(){
global $phome_db_server,$phome_db_username,$phome_db_password,$phome_db_dbname,$phome_db_char;
$connect = new mysqli($phome_db_server,$phome_db_username,$phome_db_password,$phome_db_dbname);
$connect -> query("set Names ".$phome_db_char);
return $connect;
}

/**显示结果Js*/
function displayResultJs($totalPrice,$totalProducts){
return "<div class='car'>您的购物车中有 {$totalProducts} 件商品，总计金额 ￥{$totalPrice}元。<br />点击查看 <a href='/e/ShopSys/buycar/'>结算&gt;&gt;</a> </div>";
}
?>