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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11279

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 17603

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 11314

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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How to use PHP to implement the pull-down refresh function in WeChat applet

Course Introduction：With the popularity of WeChat mini programs, many developers have begun to use PHP language to build WeChat mini program backend services. Pull-down refresh is a very common interactive function in mini programs. This article will introduce how to use PHP to implement the pull-down refresh function in WeChat mini programs. 1. The principle of pull-down refresh in WeChat applet In WeChat applet, the implementation principle of pull-down refresh is that the client initiates an HTTP request to the server, and then the server returns the latest data to the client. After the client gets the data, it uses JavaScript to convert the latest data

2023-06-01 comment 0 775

PHP development of WeChat applet: How to implement automatic reply function?

Course Introduction：PHP development of WeChat applet: How to implement automatic reply function? WeChat mini program is a lightweight application that is very suitable for mobile devices. When developing WeChat mini programs, the auto-reply function is a very important feature that can provide a better user experience. This article will introduce how to use PHP language to develop the automatic reply function of WeChat applet and provide specific code examples. First, we need to understand the basic principles of WeChat mini programs. The WeChat applet adopts the client-server model. The client is responsible for interacting with users, and the server

2023-10-27 comment 0 1154

How to use PHP to implement the drawing function of WeChat applet?

Course Introduction：How to use PHP to implement the drawing function of WeChat applet? With the popularity of mini programs, more and more developers are paying attention to how to implement drawing functions in WeChat mini programs. As a commonly used server-side scripting language, PHP can be combined with WeChat mini programs to achieve rich drawing functions. This article will introduce in detail how to use PHP to implement the drawing function of WeChat applet, and provide some code examples for reference. Overview WeChat applet supports Canvas drawing function. We can use PHP to generate pictures, and then use them in WeChat applet

2023-10-27 comment 0 1331

How to use PHP to implement the e-book reading function of WeChat applet?

Course Introduction：How to use PHP to implement the e-book reading function of WeChat applet? With the rapid development of mobile Internet, e-book reading has become one of the important ways for people to obtain knowledge. As a lightweight application, WeChat applet has also begun to play an important role in mobile applications. This article will introduce how to use PHP to implement the e-book reading function of WeChat applet and give specific code examples. First, we need to understand the basic architecture and development specifications of WeChat mini programs. WeChat mini program adopts a development model with front-end and back-end separation. The front-end uses

2023-10-27 comment 0 1084

How to use PHP to implement the book borrowing function of WeChat applet?

Course Introduction：How to use PHP to implement the book borrowing function of WeChat applet? With the development of WeChat mini programs, more and more libraries are beginning to use WeChat mini programs to provide book lending services. As a popular server-side programming language, PHP can well support the implementation of such book borrowing functions. In this article, we will introduce how to use PHP to implement the book borrowing function of the WeChat applet and provide some specific code examples. Register a mini program platform account and configure developer tools First, we need to register on the WeChat mini program platform

2023-10-27 comment 0 1352

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