Community Learn Tools Library Leisure
search
English
Home > Backend Development > PHP Tutorial > 如果知道id为2了，如何一次搜索得出 “新闻 新闻上级”呢？

如果知道id为2了，如何一次搜索得出 “新闻 新闻上级”呢？

WBOY
Release： 2016-06-13 13:19:12
Original
836 people have browsed it

如果知道id为2了，怎么一次搜索得出 “新闻 新闻下级”呢？？
表：table
id tid typename
1 0 根目录
2 1 新闻
3 2 新闻下级

如果知道id为2了，怎么一次搜索得出 “新闻 新闻下级”呢？？

------解决方案--------------------
$id= 2;
$sql = "select * from tbl_name where id=$id or tid=$id";

如果还有下下级，就不好使了，要递归

------解决方案--------------------
递归

Related labels：
id quot
source：php.cn
Previous article： 怎么计算从一个页面的某个链接跳出数呢 Next article： PHP 代码 用什么工具回编辑比较好
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Latest Issues
PHP arrays obtained from URL parameters do not behave as expected I have a URL parameter that contains the category ID and I want to treat it as an array li...
From 2024-04-06 22:09:02
0
1
1428
MySQL: "Select text from... as <variable here or subquery>" I have the following table with the following data: id text language 1 german text german ...
From 2024-04-06 19:25:54
0
2
529
MySQL gets data from multiple tables I have a eg_design table which contains the following columns: and eg_domains table which ...
From 2024-04-06 18:42:44
0
2
479
Group MySQL results by ID for looping over I have a table with flight data in mysql. I'm writing a php code that will group and displ...
From 2024-04-06 17:27:56
0
1
406
The entity warehouse extends JpaRepository<Entity, Id> and JpaSpecificationExecutor<Entity>, and EntitySpec extends Specification<Entity> This is my endpoint http://localhost:8080/country/all replies are ok for all countries and...
From 2024-04-06 17:11:03
0
1
421
Related Topics
More>
Popular Recommendations
Popular Tutorials
More>
Related Tutorials
Popular Recommendations
Latest courses
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template