php添加購物車
<!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>無標題文檔</title>
</head>
<body>
<h1>商品列表</h1>
<table width="100%" border="1" cellpadding="0" cellspacing="0">
<tr>
<td>水果代號</td>
<td>水果名稱</td>
<td>水果價格</td>
<td>水果產地</td>
<td>水果庫存</td>
<td>操作</td>
</tr>
<?php
session_start();
include("../fengzhuang/DBDA.class.php");
$db = new DBDA();
$sql = "select * from fruit";
$arr = $db->Query($sql);
foreach($arr 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=‘add.php?ids={$v[0]}‘>加入購物車</a></td>
</tr>";
}
?>
</table>
<?php
var_dump($_SESSION["gwc"]);
?>
</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>無標題文檔</title>
</head>
<body>
<h1>購物車詳情</h1>
<table width="100%" border="1" cellpadding="0" cellspacing="0">
<tr>
<td>水果代號</td>
<td>購買數量</td>
<td>操作</td>
</tr>
<?php
session_start();
$arr = array();
if(!empty($_SESSION["gwc"]))
{
$arr = $_SESSION["gwc"];
}
foreach($arr as $v)
{
echo "<tr>
<td>{$v[0]}</td>
<td>{$v[1]}</td>
<td></td>
</tr>";
}
?>
</table>
</body>
</html>
<?php
session_start();
$ids = $_GET["ids"];
/*$arr = array(
array("k001",10),
array("k002",2),
array("k003",5)
);*/
//1.第一次點擊添加購物車
//2.如果購物車中沒有該商品
//3.如果購物車中有該商品
if(empty($_SESSION["gwc"]))
{
//1.第一次點擊添加購物車
$arr = array(
array($ids,1)
);
$_SESSION["gwc"]=$arr;
}
else
{
//不是第一次點擊
//判斷購物車中是否存在該商品
$arr = $_SESSION["gwc"];
$chuxian = false;
foreach($arr as $v)
{
if($v[0]==$ids)
{
$chuxian = true;
}
}
if($chuxian)
{
//3.如果購物車中有該商品
/*foreach($arr as $v)
{
if($v[0]==$ids)
{
$v[1] = $v[1]+1;
}
}*/
for($i=0;$i<count($arr);$i++)
{
if($arr[$i][0]==$ids)
{
$arr[$i][1]+=1;
}
}
$_SESSION["gwc"] = $arr;
}
else
{
//2.如果購物車中沒有該商品
$asg = array($ids,1);
$arr[] = $asg;
$_SESSION["gwc"] = $arr;
}
}
header("location:main.php");
php添加購物車