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Homephp教程php手册PHP SESSION的增加、删除、修改、查看操作

这篇文章主要介绍了PHP SESSION的增加、删除、修改、查看操作,本文直接给出操作实例,需要的朋友可以参考下

SESSION与COOKIE的不同之处首先是,cookie的文件是保存在客户端的,而session是保存在服务器的,相比而言,为了提高一定的安全性,session更具有优势。

因为session在服务器端一般情况是服务器的管理人员管理的,但cookie是在客户端的保存,任何人都可以看的,如果不指定,,密码也是明文保存,安全性显而易见。

而且session相对来说更强大一些,可以保存数组,甚至对象等,在某种程度上,可以降低开发成本。

下面是session的使用代码:

session数据的增加:

复制代码 代码如下:


    header("Content-type: text/html; charset=utf-8;");//以utf-8显示,与session无关 
    session_start();//开始session数据保存 
    $_SESSION['name']="xuning";*//添加session数据。 
?> 


session数据的删除。

复制代码 代码如下:


    header("Content-type: text/html; charset=utf-8;");//以utf-8显示,与session无关 
    session_start();//开始session数据 
    unset($_SESSION['name']="xuning");*//删除session数据。 
    session_destory();//删除所有的session 
?> 

session的修改就是session数据的增加。
session数据的查看,即取出session数据。

复制代码 代码如下:


 session_start();
 print_r($_SESSION);//获取session
    echo $_SESSION['name']; 
?> 

无论是cookie还是session都是以一次会话结束的,即关闭浏览器结束一次会话。

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