PHP评论回复解决方法
问题:
我知道这个问题非常非常初级。。我也搜索了很多帖子,但是都相当麻烦,或者我能力不够无法实现。
问题是这样的:
我在练习写博客系统,要实现评论回复功能,要求不高,访客评论,博主回复评论,不能对回复再回复,只有一层关系:评论-回复。就这么简单。
网上的方法的数据表结构大多如下:
id:评论id pid:回复的评论id content:评论内容
我想知道,当评论的记录与回复的记录之间隔了若干行,要怎样找到回复的记录,比如:
id pid 1 0 2 0 3 1 //回复与评论隔了若干行 4 0
这个问题在SQL排序重组里好难解决啊。。求助大神,万分感谢
解决方案:
固定层级为两层好说
这语句是跟mysql版主学的
select * from `comment` order by if(pid=0,id,pid) asc
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