我们知道很多开源软件的无限分类都是采用递归的算法,但是我们知道递归即浪费时间,又浪费空间(内存),上次我也分享了个我自己原创的无限分类生成树的方法,一热心php高手网友给我提出了宝贵的建议,我测试了一下,这段代码的时间非常之短参考: http://www.oschina.net/code/snippet_98719_11296,我再次整理了一下,发现数据库查询出数据之后,我们就已经定好了键值,因而实践中,我们一般会在model中查询出格式化成主键值对应数据的形式,因而我们可以直接用这样的数据,就少了一层循环。代码也非常简洁。原来的代码:function genTree($items,$id='id',$pid='pid',$son = 'children'){ $tree =&
简介:我们知道很多开源软件的无限分类都是采用递归的算法,但是我们知道递归即浪费时间,又浪费空间(内存),上次我也分享了个我自己原创的无限分类生成树的方法,一热心php高手网友给我提出了宝贵的建议,我测试了一下,这段代码的时间非常之短参考: http://www.oschina.net/code/snippet_98719_11296,我再次整理了一下,发现数据库查询出数据之后,我们就已经定好了键值,因而...
简介:如何使用php实现无限分类
简介:这篇文章主要介绍了PHP递归遍历多维数组实现无限分类的方法,涉及PHP递归操作遍历数组的相关技巧,在联动菜单及父子栏目设计等方面非常具有实用价值,需要的朋友可以参考下
简介:这篇文章主要介绍了php 无限分类 树形数据格式化代码,需要的朋友可以参考下
简介:文章详细讲述了php 进阶:实现无限分类,希望能给大家带来帮助!
6. 生成无限分类的结构
简介:生成无限分类的结构 public function get_tree_1(array $list = array()){$root = array();$node = array();foreach ($list as $k => $v) {list($id, $pid, $name, $path) = array_values($v);$node[$id] = $v;if(isset($ ...
简介:laravel无限分类怎么做啊?谁有离线laravel手册chm的?
8. thinkphp数组合并
Introduction: The problem encountered when doing infinite classification is to read out all the third-level directories contained in the first-level directory according to the ID of the first-level directory. After the foreach loop reads out, there are 5 arrays. How can this be done? To merge into an array, I used the array_merge() function, but the result was still 5 arrays and the merge was not successful. {...
9. javascript - Ask about the wheel of infinite classification UI
Introduction: The background has been There is a set of complete database unlimited classification databases and programs, but I have not found a beautifully displayed UI with unlimited classification. I wonder if there are wheels in this area? It is best to include a drop-down menu
10. PHP unlimited classification function
Introduction::This article mainly introduces PHP infinite classification function, students who are interested in PHP tutorials can refer to it.
[Related Q&A Recommendations]:
thinkphp - PHP infinite classification requires extremely slow transformation speed
php How to simplify infinite classification?
mysql - Re-research this problem: How to reorder the subcategories of unlimited categories in php
#php - Mysql In length problem?
The above is the detailed content of 10 articles about unlimited classification recommendations. For more information, please follow other related articles on the PHP Chinese website!