【学习笔记】session机制实现PHP购物车
使用到session的页面必须要有session启动函数session_start();清空系统中session可以用session_destroy();函数。
在php.ini文件中关于session的配置：session.save_path定义了存放session 的路径；session.name定义了sessionID的名称。
下面是练习的例子，列出代码。
index.html页面：
<title>商品分类列表</title> <a href="a.php">运动器材</a><br> <a href="b.php">办公用品</a><br> <a href="c.php">烟酒副食</a><br> <a href="cart.php">查看购物车</a><br>
文件a.php页面代码：
<meta content="text/html; charset=GBK" http-equiv="Content-Type"><title>璐</title>
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