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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