php登录思路问题
想了半天，没结果，求思路
问题如下：
现在想做一个PHP+mysql的聊天室，要先登录才能进入聊天室，
一张表记录用户的注册信息
一张表记录用户的发言信息
现在的问题是怎么输出带用户名的发言
现在只能输出发言，因为发言后先记录到数据库然后从数据库输出，
不知道怎么输出带用户名的发言，
想实现的方式就是 用户名+发言
不知道用户名和发言用什么方式联系在一起。
就像很多网站登录后输出评论就是带用户名的，不知道咋实现，求思路。。
------解决方案--------------------
...这有什么思路？登录后用户名保存在session.
输出的时候加上 $_SESSION['UserName']; 不就行了？
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