PHP Infinitus classification introductory tutorial

This article mainly introduces the implementation method of PHP Infinitus classification function. It analyzes in detail the specific ideas, implementation code and related precautions for PHP to implement Infinitus classification in the form of examples. Friends in need can refer to the examples in this article. How to implement the infinite classification function in PHP. Share it with everyone for your reference. The details are as follows: When developing a program, sometimes we need to obtain all columns (including first-level columns, second-level columns, third-level columns, etc.) and form a tree structure according to the parent-child relationship. You can use recursion or reference (references in php are similar to pointers in C or C++, just another way of saying it). The idea of ​​​​implementing Infinitus classification through reference: 1. That is, all the data to be processed is packaged into an array subscripted with the primary key id (pk), so that the pid can be used to obtain the corresponding parent column. 2. Loop over the wrapped data, and if it is the root node, add its reference to the tree, otherwise, add its reference to the child element of its parent class. In this way, although only the root node is added to the tree, if each root node has child elements, it contains references to the child elements. Therefore, it can form a tree shape. The code is as follows/** 

1. Detailed Examples of Implementation Methods of PHP Infinitus Classification Function

Introduction: This article mainly introduces the implementation method of PHP Infinitus classification function. It analyzes in detail the specific ideas, implementation code and related precautions for implementing Infinitus classification in PHP in the form of examples. Friends in need can refer to the following

2. thinkphp Infinitus Classification Implementation Method

##Introduction: This article explains the method of implementing infinite classification under the thinkphp framework. Infinite classification is generally used in the classification menu of websites. It is a very common data structure and function. Interested students can refer to it.

3. Talk about a case of PHP Infinitus classification PHP Infinitus classification display PHP Infinitus classification drop-down box PHP Infinitus classification letter

Introduction: php, Infinitus: Let’s talk about a case of PHP Infinitus classification: Author: Bailang Source: http://www.manks.top/php_tree_deep.html The copyright of this article belongs to the author, and you are welcome to reprint it without the author’s consent. This statement must be retained and a link to the original text must be provided in a prominent position on the article page, otherwise we reserve the right to pursue legal liability. The original article has pictures. In daily development, it is more or less inevitable to encounter problems with Infinitus classification, because issues such as efficiency and logic have always made such problems more acute. Today we use the yii2 framework as the basis and the column Infinitus as an example to conduct a simple treatment of this problem

4. php realizes infinite classification php infinite classification displays php infinite Extreme classification drop-down box php infinite classification letter

##Introduction: php, infinite level: php realizes infinite level classification: If you write a system by yourself, you will often use the column management column If there are multiple categories and levels, it is necessary to implement infinite classification. The code is as follows: Use in the drop-down menu /* Infinite classification** Logical recursion acquisition type * hid Upper-level column id* step Lower-level column prefix * tid seleted option id*/function LogicGetTypeList($datatable=lanmu_class,$hid=0,$step=,$tid=-1) {static $Ty

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PHP Infinitus classification related code

Introduction: PHP Infinitus classification related code

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Two solutions for php infinite classification implementation_PHP tutorial

Introduction: Two solutions for PHP Infinitus classification implementation. Today I wrote about Infinitus classification and I’ll post the code below. The writing is not very good. method of classifyone Copy the code as follows: ?php /* reader: This is the Infinitus classification written by myself

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PHP Infinitus classification cleverly uses reference spanning tree_PHP Tutorial

Introduction: PHP Infinitus classification skillfully uses reference spanning trees. First look at the code implementation function generateTree($items){ $tree = array(); foreach($items as $item){ if(isset($items[$item['pid']])){ $items[$item ['pid']]['son'][] = $items[$item['id']]

8. PHP Infinitus classification implementation (not Using recursion), php recursion_PHP tutorialIntroduction: Implementation of PHP Infinitus classification (without using recursion), php recursion. Implementation of PHP Infinitus classification (without using recursion), PHP recursive Infinitus classification is often used in development, such as department structure and article classification. The difficulty of Infinitus classification lies in output and query

9. php Infinitus classification recursive sorting implementation method, php infinite recursive sorting_PHP tutorial

Introduction: PHP infinite classification recursive sorting implementation method, PHP infinite recursive sorting. PHP Infinitus classification recursive sorting implementation method, PHP infinite recursive sorting This article describes the PHP Infinitus classification recursive sorting implementation method. Share it with everyone for your reference. Specific implementation method

10. php Infinitus Classification_PHP Tutorial

Introduction: php Infinitus Classification. PHP Infinitus Classification PHP Infinitus Classification is often used. I have always used the one that has been written before, so I have not studied it carefully. Today due to the needs of the project, I need to make a temporary one

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