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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11325

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 17632

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 11338

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 implement image uploading and cropping in Vue technology development

Course Introduction：How to implement image uploading and cropping in Vue technology development requires specific code examples. In modern web development, image uploading and image cropping are one of the common requirements. As a popular front-end framework, Vue.js provides a wealth of tools and plug-ins to help us achieve these functions. This article will introduce how to implement image uploading and cropping in Vue technology development, and provide specific code examples. The implementation of image upload can be divided into two steps: selecting images and uploading images. In Vue, you can use third-party plugins to simplify this

2023-10-10 comment 0 1423

PHP implements image upload and cropping functions

Course Introduction：As a commonly used back-end programming language, PHP is widely used in the field of website development. Among them, image uploading and cropping are one of the commonly used functions in website development. The following will introduce how to use PHP to implement image upload and cropping functions. 1. Image upload function First introduces the implementation of the image upload function. The following code implements a simple image upload function:<html><head><metacharset=&q

2023-06-23 comment 0 1772

Vue and Canvas: How to implement image cropping and rotation functions

Course Introduction：Vue and Canvas: How to implement image cropping and rotation functions In modern web development, image processing is a common requirement, such as cropping and rotating images. Vue and Canvas are two powerful front-end technologies that work well together to achieve these functions. This article will introduce how to use Vue and Canvas to implement image cropping and rotation functions, and provide code examples for reference. Implementing the image upload function First, we need to implement the image upload function. You can use Vue components to create a simple

2023-07-19 comment 0 1803

How to use PHP to develop a simple image cropping function

Course Introduction：How to use PHP to develop a simple image cropping function Introduction: In the modern Internet era, image processing is a very important function. Users often need to upload or capture images to adapt to various platforms and sizes. This article will introduce how to use PHP to develop a simple image cropping function to facilitate users to crop uploaded images. 1. Preparation work: Make sure that the PHP environment has been installed and supports the GD library. You can enter php-m|grepgd in the terminal to check whether it is installed, if not

2023-09-24 comment 0 1121

How to crop a specified area of an image using PHP

Course Introduction：How to use PHP to crop a designated area of an image. During the website development process, we often encounter situations where images need to be cropped. For example, the avatar uploaded by the user needs to be resized or only a part of it needs to be intercepted. As a commonly used server-side scripting language, PHP provides a wealth of image processing functions, which can easily help us realize the image cropping function. The following uses PHP to crop a specified area of an image as an example to introduce the implementation steps and related code examples in detail. Step 1: Install the PHPGD library and use PHP to create images

2023-08-18 comment 0 1535

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