ThinkPHP 中USER_AUTH_KEY 什么功用？把session存在C('USER_AUTH_KEY’）中有什么好处-PHP Tutorial-php.cn

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ThinkPHP 中USER_AUTH_KEY 什么功用？把session存在C('USER_AUTH_KEY’）中有什么好处

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Jun 13, 2016 am 11:22 AM

authkeysessionthinkphpuser

ThinkPHP 中USER_AUTH_KEY 什么作用？把session存在C('USER_AUTH_KEY’）中有什么好处？
正在研究ThinkPHP中登录检测，登录成功保存Session看到两种形式，第一种：Session::set('username',$_POST['username']);
第二种：
Session::set(C(‘USER_AUTH_KEY’),$username);

第二种方法需要在配置文件中写 'USER_AUTH_KEY'=>'authId',
请大牛解释下两种方法有什么不同么？第二种里面设置这个USER_AUTH_KEY 干嘛？

有人说是为了防止在一个域名下运行多套thinkphp登陆时存放用户id的session发生冲突。但是想来想去不知道如果不这样会发生怎样的冲突，会出现两个会话的session id相同的情况？

thinkphp session USER_AUTH_KEY

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