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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11337

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 17642

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 11351

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.

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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

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jQuery floating navigation menu suitable for shopping product type websites_jquery

Course Introduction：The page length is large and it is necessary to quickly and easily locate different positions on the page, so floating menus have gradually become popular. The following is a jQuery floating navigation menu suitable for shopping website product types.

2016-05-16 comment 0 1358

How to use PHP Developer City to implement product classification navigation function

Course Introduction：How to use PHP Developer City to implement product classification navigation function. With the rapid development of e-commerce, more and more people choose to shop online. In order to facilitate users to browse and purchase products, mall websites usually provide product classification navigation functions. When developing a city website, the product classification navigation function can be easily implemented using PHP language. 1. Database design Before starting development, you first need to design the database. The product category navigation function of the mall website requires product category information. Usually, the classification of goods is multi-level, and

2023-06-29 comment 0 1274

Imitation of the product classification navigation menu of mainstream e-commerce websites such as Dangdang.com and Taobao_jquery

Course Introduction：This article implements a category navigation menu, similar to most popular e-commerce websites. For detailed implementation, you can directly view the source code. All codes are in a sidebar.html file.

2018-05-29 comment 0 2395

jquery imitates Jingdong navigation/imitation Taobao mall left category navigation drop-down menu effect_jquery

Course Introduction：jquery implements the drop-down menu effect. The imitation Jingdong navigation menu written by jquery is a classic left-side multi-level navigation menu. I learned that the layout can be changed arbitrarily. Friends who are interested can refer to it. I hope it will be helpful to you.

2016-05-16 comment 0 2028

How to implement radio selection addition, subtraction and deletion in jquery

Course Introduction：With the rapid development of the Internet, front-end technology has attracted more and more attention, among which jquery is one of the commonly used js libraries in the front-end. In website development, it is often necessary to perform addition, subtraction, and deletion operations on product selection. This article will introduce how to use jquery to implement single-select addition, subtraction, and deletion. 1. Single-selection operation When selecting products, we usually need to perform a single-selection operation, that is, only one can be selected among multiple options. The following takes a product category as an example to show how to use jquery to implement single selection operations. First, generate it through the input tag in the front-end page

2023-05-14 comment 0 633

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