php第二十六节课
会话购物车
<!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>
</head>
<body>
<?php
//session_start();//开启session
//HTTP,无状态性
//SESSION COOKIE
//SESSION：存储在服务端的，每个人存一份，可以存储任意类型的数据，默认过期时间15分钟
//COOKIE：存储在客户端的，每个人存一份，只能存储字符串，默认永不过期
//$_SESSION["uid"] = "zhangsan";//写入SESSION
//echo $_SESSION["uid"];
//setcookie("uid","zhangsan"); //设置COOKIE
?>
<a href="test1.php">跳转</a>
</body>
</html>
<!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>
</head>
<body>
<?php
//session_start();
//echo $_COOKIE["uid"];
//echo $_SESSION["uid"];
?>
</body>
</html>
<!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>
</head>
<body>
<table width="100%" border="1" cellpadding="0" cellspacing="0">
<tr>
<td>水果名称</td>
<td>水果价格</td>
<td>水果产地</td>
<td>水果库存</td>
<td>操作</td>
</tr>
<?php
include("../DBDA.php");
$db = new DBDA();
$sql = "select * from fruit";
$attr = $db->Query($sql);
foreach($attr as $v)
{
echo "<tr><td>{$v[1]}</td>
<td>{$v[2]}</td>
<td>{$v[3]}</td>
<td>{$v[4]}</td>
<td><a href='addgwc.php?code={$v[0]}'>加入购物车</a></td></tr>";
}
?>
</table>
<a href="gouwuche.php">查看购物车</a>
</body>
</html>
<!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>
</head>
<body>
<?php
session_start();
if(empty($_SESSION["uid"]))
{
header("location:login.php");
}
echo $_SESSION["uid"];
?>
</body>
</html>
<?php
session_start();
include("../DBDA.php");
$db = new DBDA();
$uid = $_POST["uid"];
$pwd = $_POST["pwd"];
$sql = "select count(*) from Users where Uid='{$uid}' and Pwd = '{$pwd}'";
$r = $db->StrQuery($sql);
if($r==1)
{
$_SESSION["uid"] = $uid;
header("location:main.php");
}
else
{
header("location:login.php");
}
<!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>
</head>
<body>
<h1>登录</h1>
<form action="loginchuli.php" method="post">
<div>用户名：<input type="text" name="uid" /></div>
<div>密码：<input type="text" name="pwd" /></div>
<div><input type="submit" value="登录" /></div>
</form>
</body>
</html>
<!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>
</head>
<body>
<table width="100%" border="1" cellpadding="0" cellspacing="0">
<tr>
<td>水果名称</td>
<td>水果价格</td>
<td>数量</td>
</tr>
<?php
session_start();
include("../DBDA.php");
$db = new DBDA();
$attr = $_SESSION["sg"];
foreach($attr as $v)
{
$sql = "select Name,Price from fruit where Ids='{$v[0]}'";
$arr = $db->Query($sql);
echo "<tr><td>{$arr[0][0]}</td>
<td>{$arr[0][1]}</td>
<td>{$v[1]}</td></tr>";
}
?>
</table>
</body>
</html>
<?php
session_start();
$code = $_GET["code"];
//如果第一次点击
if(empty($_SESSION["sg"]))
{
$attr = array(array($code,1));
$_SESSION["sg"] = $attr;
}
else
{
//第n次点击，n!=1
$attr = $_SESSION["sg"];
//判断该水果师是否已经存在
if(iscunzai($code))
{
foreach($attr as $k=>$v)
{
if($v[0]==$code)
{
$attr[$k][1] = $v[1]+1;
}
}
$_SESSION["sg"] = $attr;
}
else
{
$arr = array($code,1);
array_push($attr,$arr);
$_SESSION["sg"] = $attr;
}
}
function iscunzai($c)
{
$attr = $_SESSION["sg"];
$b = false;
foreach($attr as $v)
{
$b = $b || in_array($c,$v);
}
return $b;
}
header("location:showlist.php");
