Module introduction to the website backend - Category management (2) Traversal

This section will introduce a very important link, classification management, which is the core of writing a website.

What is classification management? Classification management refers to classifying things into categories, and applying different or similar management methods to different categories.

After building the table, we will traverse it in the background. First, create a cate.php

The code is as follows:

             
  
 
 内容列表
 
  添加分类 
  $v) { ?> 
 
 
CID
 
分类名称
 
父级ID
 
操作
 
 
 
 
 
 
  修改  删除 
 
  
 
  
 
添加内容
 
 
 
 
 上级分类： 
 
  请选择分类    
不选择上级分类默认为一级分类
 
 
 
 
 分类标题： 
 
  
 
 
 
 
  
 
  提交 
 
 
 
 
  

After traversing, as shown in the figure :

Next, we will start to introduce how to add categories, modify categories and delete categories.