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PHP的SESSION原理介绍与使用

Session 是服务端技术,利用这个技术,服务器在运行时可以为每一个用户的浏览器创建一个其独享的session文件,由于session为用户浏览器独享,所以用户在访问服务器的web资源时,可以把各自的数据放在各自的session中,当用户再去访问服务器中的其它web资源时(前提会话没有结束),其他web资源再从用户的各自session中取出数据为用户服务。

为每个会话数据建立独立的会话数据区(来存储当前会话的全部数据),每个会话数据区存在唯一的标志,同时浏览器端存储该唯一标志,做配对使用!

PHP的SESSION原理介绍与使用

PHP的SESSION原理介绍与使用

PHP的SESSION原理介绍与使用

session_start(),类似于header函数,前面不应该有输出!

完整删除与当前session相关的全部数据:

Session_destroy(); 数据区

Unset($_SESSION); 销毁变量

//setCookie(‘zjx’,‘’, time()-1), 销毁cookie中的session-iD

setCookie(session_name(), ‘’, time()-1), 销毁cookie中的session-iD

清空session数据:

$_SESSION = array();

文章来源:智云一二三科技

文章标题:PHP的SESSION原理介绍与使用

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关于作者: 智云科技

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