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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11311

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 17620

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 11328

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 Layui to implement front-end form verification function

Course Introduction：How to use Layui to implement front-end form verification function Introduction: In front-end development, form verification is an essential function. By validating the data entered by the user, the user experience and data accuracy can be effectively improved. Layui is a lightweight front-end UI framework that provides simple and easy-to-use form validation components, greatly reducing the workload of developers. This article will introduce how to use Layui to implement front-end form validation functions and provide specific code examples. 1. Basic usage guide of Layui form verification

2023-10-27 comment 0 1570

Which PHP framework offers the most comprehensive extension library for rapid development?

Course Introduction：The PHP framework extension library provides four frameworks for selection: Laravel: Known for its vast ecosystem and third-party packages, it provides authentication, routing, validation and other extensions. Symfony: Highly modular, extending functionality through reusable "Bundles", covering areas such as authentication and forms. CodeIgniter: lightweight and high-performance, providing practical extensions such as database connection and form validation. ZendFramework: Powerful enterprise-level features, with extensions such as authentication, database connection, RESTfulAPI support, etc.

2024-06-04 comment 0 904

PHP验证码生成原理和实现_php实例

Course Introduction：验证码在表单实现越来越多了，但是用js的写的验证码，总觉得不方便，所以学习了下php实现的验证码的原理和实现，对验证码生成原理相关知识感兴趣的朋友一起学习吧

2016-06-07 comment 0 768

How to use form validation and error prompts in Rebet framework?

Course Introduction：Rebet is a lightweight web application framework based on PHP. It provides many functions to facilitate developers to quickly develop high-performance web applications. Among them, form validation and error prompts are an important link in web application development, and are also one of the functions provided by the Rebet framework. Form verification and error prompts are mainly used to verify whether the form data submitted by the user meets the requirements and promptly notify the user of error information so that the user can correct the error information and resubmit. The Rebet framework provides form validation and error

2023-06-03 comment 0 1607

What framework is layui based on?

Course Introduction：layui is a lightweight front-end framework based on jQuery. It uses jQuery's API and encapsulates it. It provides a wealth of components and tools to simplify the web development process, including responsive layout, menus, form validation, ajax requests and other functions. .

2024-04-01 comment 0 958

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