Community Learn Tools Library Leisure

English

Home > Backend Development > PHP Tutorial > body text

Three-level classification like query queries many IDs and needs to find the corresponding parent ID and combine them based on the parent ID. How should the data be combined based on the parent ID?

WBOY

Release： 2016-08-04 09:19:17

Original

1216 people have browsed it

This is the data obtained. The parent id is parent_id

<code>Array
(
    [0] => Array
        (
            [department_id] => 1
            [parent_id] => 0
            [department_code] => xsb1
            [department_name] => 销售部1
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [1] => Array
        (
            [department_id] => 2
            [parent_id] => 1
            [department_code] => xs1q
            [department_name] => 销售1区
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [2] => Array
        (
            [department_id] => 3
            [parent_id] => 2
            [department_code] => xs1ks
            [department_name] => 销售1科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [3] => Array
        (
            [department_id] => 4
            [parent_id] => 2
            [department_code] => xs2ks
            [department_name] => 销售2科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [4] => Array
        (
            [department_id] => 5
            [parent_id] => 2
            [department_code] => xs3ks
            [department_name] => 销售3科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [5] => Array
        (
            [department_id] => 6
            [parent_id] => 2
            [department_code] => xs4ks
            [department_name] => 销售4科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [6] => Array
        (
            [department_id] => 7
            [parent_id] => 1
            [department_code] => xs2q
            [department_name] => 销售2区
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [7] => Array
        (
            [department_id] => 8
            [parent_id] => 7
            [department_code] => xs1ks
            [department_name] => 销售1科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [8] => Array
        (
            [department_id] => 9
            [parent_id] => 7
            [department_code] => xs2ks
            [department_name] => 销售2科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [9] => Array
        (
            [department_id] => 10
            [parent_id] => 7
            [department_code] => xs3ks
            [department_name] => 销售3科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [10] => Array
        (
            [department_id] => 11
            [parent_id] => 7
            [department_code] => xs4ks
            [department_name] => 销售4科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [11] => Array
        (
            [department_id] => 12
            [parent_id] => 0
            [department_code] => xsb2
            [department_name] => 销售部2
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [12] => Array
        (
            [department_id] => 13
            [parent_id] => 12
            [department_code] => xs3q
            [department_name] => 销售3区
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [13] => Array
        (
            [department_id] => 14
            [parent_id] => 13
            [department_code] => xs1ks
            [department_name] => 销售1科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [14] => Array
        (
            [department_id] => 15
            [parent_id] => 13
            [department_code] => xs2ks
            [department_name] => 销售2科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [15] => Array
        (
            [department_id] => 16
            [parent_id] => 13
            [department_code] => xs3ks
            [department_name] => 销售3科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [16] => Array
        (
            [department_id] => 17
            [parent_id] => 13
            [department_code] => xs4ks
            [department_name] => 销售4科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [17] => Array
        (
            [department_id] => 18
            [parent_id] => 12
            [department_code] => xs4q
            [department_name] => 销售4区
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [18] => Array
        (
            [department_id] => 19
            [parent_id] => 18
            [department_code] => xs1ks
            [department_name] => 销售1科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [19] => Array
        (
            [department_id] => 20
            [parent_id] => 18
            [department_code] => xs2ks
            [department_name] => 销售2科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039208
            [add_user_id] => 1
            [edit_time] => 1470039208
            [edit_user_id] => 1
        )

    [20] => Array
        (
            [department_id] => 21
            [parent_id] => 18
            [department_code] => xs3ks
            [department_name] => 销售3科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039208
            [add_user_id] => 1
            [edit_time] => 1470039208
            [edit_user_id] => 1
        )

    [21] => Array
        (
            [department_id] => 22
            [parent_id] => 18
            [department_code] => xs4ks
            [department_name] => 销售4科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039208
            [add_user_id] => 1
            [edit_time] => 1470039208
            [edit_user_id] => 1
        )

)</code>

Copy after login

Copy after login

This is still a three-level classification. It is possible that the last level is found. Then there are two more levels. How to merge it?

Reply content:

This is the data obtained. The parent id is parent_id

<code>Array
(
    [0] => Array
        (
            [department_id] => 1
            [parent_id] => 0
            [department_code] => xsb1
            [department_name] => 销售部1
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [1] => Array
        (
            [department_id] => 2
            [parent_id] => 1
            [department_code] => xs1q
            [department_name] => 销售1区
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [2] => Array
        (
            [department_id] => 3
            [parent_id] => 2
            [department_code] => xs1ks
            [department_name] => 销售1科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [3] => Array
        (
            [department_id] => 4
            [parent_id] => 2
            [department_code] => xs2ks
            [department_name] => 销售2科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [4] => Array
        (
            [department_id] => 5
            [parent_id] => 2
            [department_code] => xs3ks
            [department_name] => 销售3科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [5] => Array
        (
            [department_id] => 6
            [parent_id] => 2
            [department_code] => xs4ks
            [department_name] => 销售4科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [6] => Array
        (
            [department_id] => 7
            [parent_id] => 1
            [department_code] => xs2q
            [department_name] => 销售2区
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [7] => Array
        (
            [department_id] => 8
            [parent_id] => 7
            [department_code] => xs1ks
            [department_name] => 销售1科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [8] => Array
        (
            [department_id] => 9
            [parent_id] => 7
            [department_code] => xs2ks
            [department_name] => 销售2科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [9] => Array
        (
            [department_id] => 10
            [parent_id] => 7
            [department_code] => xs3ks
            [department_name] => 销售3科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [10] => Array
        (
            [department_id] => 11
            [parent_id] => 7
            [department_code] => xs4ks
            [department_name] => 销售4科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [11] => Array
        (
            [department_id] => 12
            [parent_id] => 0
            [department_code] => xsb2
            [department_name] => 销售部2
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [12] => Array
        (
            [department_id] => 13
            [parent_id] => 12
            [department_code] => xs3q
            [department_name] => 销售3区
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [13] => Array
        (
            [department_id] => 14
            [parent_id] => 13
            [department_code] => xs1ks
            [department_name] => 销售1科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [14] => Array
        (
            [department_id] => 15
            [parent_id] => 13
            [department_code] => xs2ks
            [department_name] => 销售2科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [15] => Array
        (
            [department_id] => 16
            [parent_id] => 13
            [department_code] => xs3ks
            [department_name] => 销售3科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [16] => Array
        (
            [department_id] => 17
            [parent_id] => 13
            [department_code] => xs4ks
            [department_name] => 销售4科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [17] => Array
        (
            [department_id] => 18
            [parent_id] => 12
            [department_code] => xs4q
            [department_name] => 销售4区
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [18] => Array
        (
            [department_id] => 19
            [parent_id] => 18
            [department_code] => xs1ks
            [department_name] => 销售1科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039207
            [add_user_id] => 1
            [edit_time] => 1470039207
            [edit_user_id] => 1
        )

    [19] => Array
        (
            [department_id] => 20
            [parent_id] => 18
            [department_code] => xs2ks
            [department_name] => 销售2科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039208
            [add_user_id] => 1
            [edit_time] => 1470039208
            [edit_user_id] => 1
        )

    [20] => Array
        (
            [department_id] => 21
            [parent_id] => 18
            [department_code] => xs3ks
            [department_name] => 销售3科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039208
            [add_user_id] => 1
            [edit_time] => 1470039208
            [edit_user_id] => 1
        )

    [21] => Array
        (
            [department_id] => 22
            [parent_id] => 18
            [department_code] => xs4ks
            [department_name] => 销售4科室
            [department_phone] => 
            [department_cornet] => 
            [department_description] => 
            [department_sort] => 0
            [is_delete] => 1
            [department_status] => 1
            [add_time] => 1470039208
            [add_user_id] => 1
            [edit_time] => 1470039208
            [edit_user_id] => 1
        )

)</code>

Copy after login

Copy after login

This is still a three-level classification. It is possible that the last level is found. Then there are two more levels. How to merge it?

I only think of using

foreach

to put data with the same parent ID into the same array with parent_id as the key. If you want parent information, you can also make a logical judgment<div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false"><code>$result =[] foreach($list as $key => $val){ if($val['parent_id'] != 0) { $result[$val['parent_id']][] = $val; } } </code></pre><div class="contentsignin">Copy after login</div></div>

1. Add a path field to represent the path from the root node to the leaf node, such as 1.3.7

The requirement is to search and then find all parents and subsets of the search results. The tree diagram displays the keywords in red

My approach is

1. Create a new array to save the ID of all the data that needs to be displayed. The initial data is the queried ID

2. First find all the parents based on the query ID and put them in the new array
3. Query all based on the ID There may be multiple subset ids here. I loop and use array_unshift to put them into the new array
4. Deduplicate the ids of the new array (the final combination here is a one-dimensional array)
5. Loop the array id to query all data
6 .Category combination

Thanks to those who answered. If you have a better way, please share it, haha

Related labels：

php

source：php.cn

Previous article：javascript - How to prevent users from sliding the page on mobile phones Next article：In actual development projects, wamp's php extension, php settings and apache module on the server

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

What is a NullPointerException, and how do I fix it?

2024-10-22 09:46:29
From Novice to Coder: Your Journey Begins with C Fundamentals

2024-10-13 13:53:41
Unlocking Web Development with PHP: A Beginner's Guide

2024-10-12 12:15:51
Demystifying C: A Clear and Simple Path for New Programmers

2024-10-11 22:47:31
Unlock Your Coding Potential: C Programming for Absolute Beginners

2024-10-11 19:36:51
Unleash Your Inner Programmer: C for Absolute Beginners

2024-10-11 15:50:41
Automate Your Life with C: Scripts and Tools for Beginners

2024-10-11 15:07:41
PHP Made Easy: Your First Steps in Web Development

2024-10-11 14:21:21
Build Anything with Python: A Beginner's Guide to Unleashing Your Creativity

2024-10-11 12:59:11
The Key to Coding: Unlocking the Power of Python for Beginners

2024-10-11 12:17:31

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

Where should I place CustomLog directive in apache I'm using php:7.2-apachedocker. I need to disable health check url login access log. Based...

From 2024-04-06 22:03:59

0

1

990

What is the format of the variables in the return value? I am a new learner of php. I found a piece of code: if($x<time()){return[false,'error']...

From 2024-04-06 21:55:20

0

1

778

Problems encountered when using opentbs to generate odt files: values of the same key are displayed in the same row instead of separate columns. I'm using a library called OpenTbs to create odt using PHP, I'm using it because columns a...

From 2024-04-06 20:18:18

0

1

483

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

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