【下载文档:  Ajax + PHP session制作购物车.txt 】

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Ajax + PHP session制作购物车
购物车网页代码，具体内容如下
1.登录界面login.php














2.登录处理页面loginchuli.php
session_start();
include("../DBDA.class.php");
$db = new DBDA();
$uid = $_POST["u"];
$pwd = $_POST["p"];
$sql = "select password from login where username='{$uid}'";
$mm = $db->StrQuery($sql);
if($mm==$pwd && $pwd!="")
{
$UserName = $_POST["uid"];
$_SESSION["uid"]=$uid;
echo "OK";
}
else
{
echo "NO";
}
3.主页面main.php
session_start();
include("../DBDA.class.php");
$db = new DBDA();
?>















4.购买处理页面goumai.php
session_start();
$code = $_GET["code"];
if(empty($_SESSION["gwc"]))
{
//第一次点击购买
$attr = array(
array($code,1)
);
$_SESSION["gwc"] = $attr;
}
else
{
//不是第一次点击购买
$attr = $_SESSION["gwc"];
$bs=0;
foreach($attr as $k=>$v)
{
if($v[0]==$code)
{
$bs=1;
$attr[$k][1] = $attr[$k][1]+1;
}
}
//如果没有在数组里面出现
if($bs==0)
{
$shuzu = array($code,1);
$attr[] = $shuzu;
}
$_SESSION["gwc"]=$attr;
}
header("location:main.php");
5.订单处理页面，计算选取水果的总价，和水果剩余量。dingdan.php
session_start();
include("../DBDA.class.php");
$db = new DBDA();
$uid = $_SESSION["uid"];
$attr = array();
if(!empty($_SESSION["gwc"]))
{
$attr = $_SESSION["gwc"];
}
//看下两个条件是否都满足
$bs = true;
//判断余额是否满足
//根据用户名找余额
$syue = "select account from login where username='{$uid}'";
$yue = $db->StrQuery($syue);
//根据购物车数组取总金额
$sum = 0;
foreach($attr as $v)
{
$sql = "select price from fruit where ids='{$v[0]}'";
$danjia = $db->StrQuery($sql);
$sum = $sum +$danjia*$v[1];
}
if($yue<$sum)
{
$bs = false;
echo "YEBUZU";
exit;
}
//判断库存是否满足
foreach($attr as $v)
{
$skucun = "select name,numbers from fruit where ids='{$v[0]}'";
$akucun = $db->Query($skucun);
if($akucun[0][1]<$v[1])
{
$bs = false;
echo "{$akucun[0][0]}库存不足！";
exit;
}
}
//添加订单，减库存，减余额
if($bs)
{
//减库存
foreach($attr as $v)
{
$sql = "update fruit set numbers = numbers-{$v[1]} where ids='{$v[0]}'";
$db->Query($sql,0);
}
//减余额
$jianyue="update login set account=account-{$sum} where username='{$uid}'";
$db->Query($jianyue,0);
//添加订单
$dingdanhao = $uid+date("YmdHis");
$t = time();
$sorder = "insert into orders values('{$dingdanhao}','{$uid}','{$t}')";
$db->Query($sorder,0);
foreach($attr as $v)
{
$sxq = "insert into orderdetails values('','{$dingdanhao}','{$v[0]}','{$v[1]}')";
$db->Query($sxq,0);
}
}
echo "OK";
6.购物车页面
session_start();
?>

















7.购物车页面删除处理页面shanchu.php
session_start();
$sy = $_GET["sy"];
$attr = $_SESSION["gwc"];
if($attr[$sy][1]>1)
{
$attr[$sy][1] = $attr[$sy][1]-1;
}
else
{
unset($attr[$sy]);
$attr = array_values($attr);
}
$_SESSION["gwc"]=$attr;
header("location:gouwuche.php");
8.账户余额页面zhanghu.php
session_start();
$uid = $_SESSION['uid'];
?>















以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持中文源码网。