购物车的例子
<?php
session_start();
include("fengzhuanglei.php");
$db = new DBDA();
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style type="text/css">
.list{ width:100%; height:30px; margin-top:10px; text-align:center; line-height:30px; vertical-align:middle}
</style>
</head>
<body>
<div style="width:100%; height:100px; background-color:#6CC">
<h1 style="float:left">大苹果商城</h1>
<a style="float:right; margin-top:40px" href="zhuxiao.php">注销</a>
</div>
<br />
<div style="width:100%; height:600px">
<div id="left" style="width:20%; float:left">
<a href="gouwuche.php"><div class="list">浏览商品</div></a>
<a href="zhanghu.php"><div class="list">查看账户</div></a>
<a href="gouwu.php"><div class="list">查看购物车</div></a>
</div>
<div id="right" style="width:80%; float:left">
<?php
$gwc = array();
if(!empty($_SESSION["gwc"]))
{
$gwc = $_SESSION["gwc"];
}
$zhonglei = count($gwc);
$sum = 0;
foreach($gwc as $v)
{
$sql = "select price from fruit where ids='{$v[0]}'";
$danjia = $db->strQuery($sql);
$sum = $sum + $danjia*$v[1];
}
echo"<div>购物车中有：{$zhonglei}商品，总价格：{$sum}元</div>";
?>
<table width="100%" border="1" cellpadding="0" cellspacing="0">
<tr>
<td>代号</td>
<td>水果名称</td>
<td>水果价格</td>
<td>源产地</td>
<td>库存量</td>
<td>操作</td>
</tr>
<?php
$sql = "select * from fruit";
$attr = $db->Query($sql);
foreach($attr as $v)
{
echo "<tr>
<td>{$v[0]}</td>
<td>{$v[1]}</td>
<td>{$v[2]}</td>
<td>{$v[3]}</td>
<td>{$v[4]}</td>
<td><a href='goumai.php?code={$v[0]}'>购买</a></td></tr>";
}
?>
</table>
</div>
</div>
</body>
</html>
<?php
session_start();
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script src="jquery-1.11.2.min.js"></script>
<title>无标题文档</title>
<style type="text/css">
.list{ width:100%; height:30px; margin-top:10px; text-align:center; line-height:30px; vertical-align:middle}
</style>
</head>
<body>
<div style="width:100%; height:100px; background-color:#6CC">
<h1 style="float:left">大苹果商城</h1>
<a style="float:right; margin-top:40px" href="zhuxiao.php">注销</a>
</div>
<br />
<div style="width:100%; height:600px">
<div id="left" style="width:20%; float:left">
<a href="gouwuche.php"><div class="list">浏览商品</div></a>
<a href="zhanghu.php"><div class="list">查看账户</div></a>
<a href="gouwu.php"><div class="list">查看购物车</div></a>
</div>
<div id="right" style="width:80%; float:left">
<table width="100%" border="1" cellpadding="0" cellspacing="0">
<tr>
<td>商品名称</td>
<td>商品价格</td>
<td>购买数量</td>
<td>操作</td>
</tr>
<?php
include("fengzhuanglei.php");
$db = new DBDA();
$attr = array();
if(!empty($_SESSION["gwc"]))
{
$attr = $_SESSION["gwc"];
}
foreach($attr as $k=>$v)
{
$sql = "select name,price from fruit where ids='{$v[0]}'";
$shui = $db->Query($sql);
echo"<tr><td>{$shui[0][0]}</td><td>{$shui[0][1]}</td><td>{$v[1]}</td><td><a href='shanchu.php?sy={$k}'>删除</a></td></tr>";
}
?>
</table>
<div ><input type="button" id="tj" value="提交订单" /></div><div id="ts"></div>
</div>
</div>
</body>
<script type="text/javascript">
$("#tj").click(function(){
})
</script>
</html>
购买页面：
<?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:gouwuche.php");
删除页面：
<?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:gouwu.php");
提交页面：
<?php
session_start();
include("fengzhuanglei.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";
