Session

最新推荐文章于 2023-11-27 11:28:38 发布

转载最新推荐文章于 2023-11-27 11:28:38 发布 · 488 阅读

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#PHP #session

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本文介绍了 PHP 中 session 的基本使用方法，包括如何启动 session、存储数组和对象数据，并通过实例展示了如何利用 session 实现购物车功能。

session是一种服务器端的技术，他的生命周期是一次会话（也就是从进入页面到关闭浏览器）；

启用Session:

<?php
echo "hello<br>";
session_start();
$_SESSION['name']='luna';
$_SESSION['hanzi']="中国上海";
$arr=array("中国","上海","浦东");
$_SESSION['shuzu']=$arr;
class dog{
    private $name;
    private $age;
    private $in;
    public function __construct($name,$age,$in){
        $this->name=$name;
        $this->age=$age;
        $this->in=$in;

    }
    public function getname(){
        return $this->name;
    }
}
$dog=new dog("Lily",24,"beautiful girl");
$_SESSION['object']=$dog;
echo "success";

查看Session：

<?php
header("Content-type: text/html; charset=utf-8");
session_start();
echo $_SESSION['name'];

print_r($_SESSION);
echo "<br><br>";
class dog{
    private $name;
    private $age;
    private $in;
    public function __construct($name,$age,$in){
        $this->name=$name;
        $this->age=$age;
        $this->in=$in;

    }
    public function getname(){
        return $this->name;
    }
}
$a=$_SESSION['object'];
print_r($a);
echo "name id".$a->getname();

Session既可以保存数组也可以保存对象！

<?php
header("content-type:text/html;charset=utf-8");
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=西游记'>西游记</a><br/>";
echo "<a href='ShopProcess.php?bookid=sn003&bookname=三国演义'>三国演义</a><br/>";
echo "<a href='ShopProcess.php?bookid=sn004&bookname=神雕侠侣'>神雕侠侣</a><br/>";
echo "<hr/>";
echo "<a href='ShowCart.php'>查看购买到商品列表</a>";

<?php
header("content-type:text/html;charset=utf-8");
$bookid=$_GET['bookid'];
$bookname=$_GET['bookname'];
session_start();
$_SESSION[$bookid]=$bookname;
echo "<br/>购买商品成功";
echo "<br/><a href='Myhall.php'>返回购物大厅继续</a>";

<?php
header("content-type:text/html;charset=utf-8");
echo "<h1>购物车商品有：</h1>";
session_start();
foreach($_SESSION as $key=>$val){
    echo "<br/>书号--$key 书名--$val";
}