session在用户禁用cookie后就不能正常使用，而是每一次session都建立一个新的session文件。为了解决这一问题则需加入如下代码。
选择页面（MyHall.php）代码：
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
| <?php
if(isset($_GET['PHPSESSID'])){
session_id($_GET['PHPSESSID']);
}
session_start();
$sid=session_id();
//购物大厅
echo "<h1>欢迎购买</h1>";
echo "<a href='ShopProcess.php?bookid=sn001&bookname=天龙八部&PHPSESSID=$sid'>天龙八部</a><br/>";
echo "<a href='ShopProcess.php?bookid=sn002&bookname=红楼梦&PHPSESSID=$sid'>红楼梦</a><br/>";
echo "<a href='ShopProcess.php?bookid=sn003&bookname=西游记&PHPSESSID=$sid'>西游记</a><br/>";
echo "<a href='ShopProcess.php?bookid=snoo4&bookname=聊斋&PHPSESSID=$sid'>聊斋</a><br/>";
echo "<hr/>";
echo "<a href='ShowCart.php?&PHPSESSID=$sid'>查看购买到的商品列表</a>";
|
处理页面（ShopProcess.php）代码：
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
| <?php
if(isset($_GET['PHPSESSID'])){
session_id($_GET['PHPSESSID']);
}
session_start();
$sid=session_id();
//接收传来的数据
$bookid=$_GET['bookid'];
$bookname=$_GET['bookname'];
//保存到session中
$_SESSION[$bookid]=$bookname;
echo "<br/>购买成功";
echo "<a href='MyHall.php?PHPSESSID=$sid'><br/>返回购物大厅</a>";
|
显示session页面（ShowCart.php）代码：
1
2
3
4
5
6
7
8
9
10
| <?php
if(isset($_GET['PHPSESSID'])){
session_id($_GET['PHPSESSID']);
}
session_start();
echo "所选的商品为";
foreach($_SESSION as $key=>$val){
echo "<br/> 书号--$key 书名--$val";
}
|
禁用cookie前：
选择页面（MyHall.php）代码：
1
2
3
4
5
6
7
8
9
10
11
12
| <?php
session_start();
//$sid=session_id();
//购物大厅
echo "<h1>欢迎购买</h1>";
echo "<a href='ShopProcess.php?bookid=sn001&bookname=天龙八部'>天龙八部</a><br/>";
echo "<a href='ShopProcess.php?bookid=sn002&bookname=红楼梦'>红楼梦</a><br/>";
echo "<a href='ShopProcess.php?bookid=sn003&bookname=西游记'>西游记</a><br/>";
echo "<a href='ShopProcess.php?bookid=snoo4&bookname=聊斋'>聊斋</a><br/>";
echo "<hr/>";
echo "<a href='ShowCart.php'>查看购买到的商品列表</a>";
|
处理页面（ShopProcess.php）代码：
1
2
3
4
5
6
7
8
9
10
11
12
13
| /*if(!empty($_GET['PHPSESSID'])){
session_id($_GET['PHPSESSID']);
}*/
session_start();
//接收传来的数据
$bookid=$_GET['bookid'];
$bookname=$_GET['bookname'];
//保存到session中
//$_SESSION[$bookid]=$bookname;
echo "<br/>购买成功";
echo "<a href='MyHall.php'><br/>返回购物大厅</a>";
|
显示session页面（ShowCart.php）代码：
1
2
3
4
5
6
7
8
9
| <?php
/*if(!empty($_GET['PHPSESSID'])){
session_id($_GET['PHPSESSID']);
}*/
session_start();
echo "所选的商品为";
foreach($_SESSION as $key=>$val){
echo "<br/> 书号--$key 书名--$val";
}
|
原理：session中的sessionid传递需要cookie，
抓取http结果：
Set-Cookie: PHPSESSID=4rd8untdg7a83mp9c8vl4hn2c0; path=/
而禁用session后：
会建立多个PHPSESSID，最后导致找不到session文件，而无法完成session的功能。
执拗前行