Course recommendations for third-level catalogs

Requirements: 1. Three-level menu 2. You can choose to enter each submenu in turn, select the serial number to enter the directory 3. Enter b to return to the upper-level directory, q to exit and change the directory code implementation: #! /bin/env python #!--*--coding:utf-8 --*-- # ----*auth:freem* import sys #flag=True #def flas(): #flag=False; #Definition dictionary includes, country, state (province), city dic={'China':{'Hebei':('Shijiazhuang','Xingtai','Hengshui',),'Beijing':('Changping','Haidian','Chaoyang',),'Shanxi': ('Taiyuan','Datong','Yuncheng',

1. Python three-level directory display method

Introduction: This article mainly introduces the relevant information about the implementation method of Python three-level directory display. This article introduces it to you through pictures and texts. It is very good and has reference value. Friends in need can refer to

2. thinkphp array merging

Introduction: Encountered while doing infinite classification The problem is to read out all the third-level directories contained in the first-level directory based on the ID of the first-level directory. After the foreach loop reads out, there are 5 arrays. How can they be merged into one array? I have used the array_merge() function, but the result is still the same. 5 arrays were not merged successfully {...

##3. The problem of setting up multi-level directory sessions in php_PHP tutorial

Introduction: The problem of setting up multi-level directory sessions in php. Find session.save_path in php.ini and set the value to session.save_path = '3;/tmp/session'; to open the three-level directory. Save the session. However, php will not automatically generate the directory structure. At this time, you can

##4.

php multi-level navigation display

Introduction: php multi-level navigation display Write it once, think about it once... do it again...? I'll leave it here this time... and copy it directly if you need it later. first code Get the categories to display. The first-level directory is placed in categories[0], The secondary directory is placed in categories[1], The third-level directory is placed in categories[2], ....and so on However, it usually reaches level 3 and then no longer points down. $cpath = array(

5.

php multi-level navigation display

Introduction: php multi-level navigation display Write Once, think about it... do it again...? I'll leave it here this time... and copy it directly in the future. The first piece of code gets the category to be displayed. The first-level directory is placed in categories[0], and the second-level directory is The directory is placed in categories[1], the third-level directory is placed in categories[2],....and so on, but generally it is no longer divided down until it reaches level 3. $cpath = array(); if(!em

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