search_省，市，縣三級聯動完整版-php.cn

Whole station
Course
Article
Q&A
Download

Self-study IT network Linux load balancing video tutorial

Course Intermediate 11340

Course Introduction："Self-study IT Network Linux Load Balancing Video Tutorial" mainly implements Linux load balancing by performing script operations on web, lvs and Linux under nagin.

Shangxuetang MySQL video tutorial

Course Advanced 17646

Course Introduction："Shangxuetang MySQL Video Tutorial" introduces you to the process from installing to using the MySQL database, and introduces the specific operations of each link in detail.

Band of Brothers front-end example display video tutorial

Course Advanced 11353

Course Introduction："Brothers Band Front-end Example Display Video Tutorial" introduces examples of HTML5 and CSS3 technologies to everyone, so that everyone can become more proficient in using HTML5 and CSS3.

More courses

Ways to fix issue 2003 (HY000): Unable to connect to MySQL server 'db_mysql:3306' (111)

I recently tried to containerize my FastAPIPython server (also for replication/doubling purposes). Before, I had just a MySQL server in a Docker container and everything was fine, but when I also made my web server a service, it couldn't connect to the MySQL server, so now the application doesn't work. Below is the code snippet of the server database initialization connector in the application fromfastapiimportFastAPIimportmysql.connectorapp

2023-09-05 11:18:47

Experiment with sorting after query limit

So this is my first question here, please forgive me if something is wrong. I'm trying to make a sort query based on constraints. So there is a Customers table with 90 records. I want to first perform a query limited to 3 records, and then sort the results of this query by a column called ContactName. I think this might be a nested query. Nested queries run fine in SQLServer, but don't know how to implement it in MySQL. Limit query: Select*fromcustomerslimit

2023-09-05 14:46:42

CSS Grid: Create new row when child content overflows column width

I have a two column layout based on CSS grid. When the content of the second column exceeds 1fr I want to create a new row. As it currently stands, the content simply overflows the column. One requirement of this layout is that the items in the right menu column are in one row. I achieve this with: .right-menu{...grid-auto-flow:columndense;...} If I remove the grid-auto-flow attribute, the overflow stops. However, the items are now stacked into multiple rows, which is not what I want. I also tried converting .ri

2023-09-05 15:18:28

PHP full text search functionality using AND, OR and NOT operators

Newbie question: I'm trying to implement a full text search on a search string using php and eloquent. $searchstring="+(victimsuspect)+crime-covid";$searchresult=RssItem::whereRaw("MATCH(description)AGAINST('$searchstring'INBOOLEANMODE)")->ge

2023-09-05 15:06:32

Shortest way to convert all PHP types to string

I'm writing a general system that I hope can one day be applied to fields like medicine (i.e. it's "scientific"). I think the best way is to represent all the data in php with strings (true will be "true", false will be "false" and so on). The reason for this is that in php any value has a unique string representation (such as the php code itself). I post this question to speed up the design process of this program. Some values are easily converted to strings: numbers, booleans, etc. Some are not easy: objects, arrays, resources. I think the transfer object and

2023-09-05 15:34:44

MoreQ&A

Three-level linkage between provinces, cities and counties without ajax refreshing

Course Introduction：This time I will bring you the three-level linkage of provinces, cities and counties without ajax refreshing. What are the precautions for realizing the three-level linkage of provinces, cities and counties without ajax refreshing? The following is a practical case, let’s take a look.

2018-04-04 comment 0 1276

Complete example of national province and city second-level linkage drop-down selection menu implemented by js_javascript skills

Course Introduction：This article mainly introduces the national province and city second-level linkage drop-down selection menu implemented by js. It analyzes in detail the implementation skills of javascript to realize the province and city second-level linkage drop-down menu in the form of a complete example. It is very simple and practical. Friends who need it can For reference

2016-05-16 comment 0 1356

js implementation of simple province, city and county three-level linkage effect examples_javascript skills

Course Introduction：This article mainly introduces the implementation of simple three-level linkage effects of provinces, cities and counties in js, and analyzes the specific steps and related implementation techniques of JavaScript to achieve the three-level linkage effects of provinces, cities and counties in the form of a complete example. Friends in need can refer to the following

2016-05-16 comment 0 1683

jQuery jsp realizes the three-level linkage effect of provinces, cities and counties (with source code)_jquery

Course Introduction：This article mainly introduces jQuery jsp to achieve the three-level linkage effect of provinces, cities and counties. It analyzes the relevant skills of jQuery combined with jsp to read the MySQL database operation to achieve the three-level linkage effect of provinces, cities and counties in the form of a complete example. It also comes with a complete example source code for readers. Download for reference, friends in need can refer to it

2016-05-16 comment 0 2081

Course Introduction：This article mainly introduces the simple province, city and county three-level linkage function implemented by native JavaScript. It analyzes the implementation method of JavaScript linkage menu in the form of a complete example, involving implementation techniques related to JavaScript event response and dynamic operation of page elements. Friends in need can refer to it. The example in this article below describes the simple provincial, city and county three-level linkage function implemented in native JavaScript. I share it with you for your reference. The details are as follows: Three-level linkage is indispensable when we write forms. For example, we use it when writing the delivery address. Recently, I was watching native Java...

2017-06-13 comment 0 1585

MoreTechnical Articles