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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

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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.

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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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How to get openid after scanning the QR code image generated with PHP?

I used the PHP QR code generation class library to generate a QR code picture (not generated by the WeChat interface). I want to get the openid of a WeChat user after scanning the QR code. How can I implement this function? (I previously thought of using web page authorization to achieve this, but the prerequisite for this is that WeChat users need to pay attention to the official account. Is it possible to directly scan the QR code to jump to the target page without users paying attention, and obtain it in the process? to his openid?)

2017-06-28 16:57:44

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

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Generate QR code using PHP class library PHPqrCode

Course Introduction：This article mainly introduces the use of PHP class library PHPqrCode to generate QR codes. It has certain reference value. Now I share it with you. Friends in need can refer to it.

2018-07-07 comment 0 3319

PHP class library for generating QR codes (QRCode method)

Course Introduction：PHP class library for generating QR codes (QRCode method)

2016-07-25 comment 0 1299

Detailed explanation of how PHP generates QR codes based on the phpqrcode class

Course Introduction：This article mainly introduces the method of generating QR codes in PHP based on the phpqrcode class. It analyzes the specific functions, usage methods and related operation precautions of the phpqrcode class in detail in the form of examples. Friends in need can refer to the following

2018-04-19 comment 0 1806

HP QR Code is a PHP QR code generation library

Course Introduction：:This article mainly introduces HP QR Code, a PHP QR code generation library. Students who are interested in PHP tutorials can refer to it.

2016-07-29 comment 0 1014

php QR code generation

Course Introduction：It is quite difficult to generate QR codes using PHP language. You can use phpqrcode, a ready-made class file and PHP QR code generation class library, to easily generate QR codes.

2019-09-03 comment 0 3116

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