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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 17638

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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Pure jquery implements imitation of Taobao shopping cart settlement_jquery

Course Introduction：When shopping on Taobao, you need to add products to the shopping cart, which includes changes in the amount of all selections and single selections. When adding products, the amount will also change accordingly. Through this article, I will share with you how to imitate Taobao shopping cart settlement using pure jquery. Friends who need it You can refer to it

2016-05-16 comment 0 1810

Taobao Shopping Cart API Document Analysis, PHP Development Guide

Course Introduction：Taobao Shopping Cart API Document Analysis, PHP Development Guide 1. Introduction With the rapid development of e-commerce, Taobao Shopping Cart has become one of the preferred shopping platforms for many users. Taobao Shopping Cart API provides developers with a convenient way to interact with Taobao Shopping Cart. This article mainly introduces the relevant document analysis of Taobao shopping cart API, and provides PHP development guide to help developers better develop Taobao shopping cart. 2. Analysis of Taobao Shopping Cart API Documentation Taobao Shopping Cart API document is an important step for developers to

2023-07-01 comment 0 1094

How to add Taobao to shopping cart php shopping cart example (Shen Jing)

Course Introduction：How to add Taobao to the shopping cart: How to add Taobao to the shopping cart php shopping cart instance (Shen Jing): if(! $session && ! $scid) { /* session is used to distinguish each shopping cart, which is equivalent to the ID card of each cart number; scid is only used to identify a shopping cart id number, which can be regarded as the name of each cart; when both the id and session value of the shopping cart do not exist, a new shopping cart is generated */ $session = md5(uniqid(rand())); /* Generate a unique shopping cart session number rand() first generates a random number, u

2016-07-29 comment 0 2067

How to implement Taobao shopping cart page with php array

Course Introduction：Taobao is currently the most popular e-commerce platform in China, and the shopping cart is an important function of the Taobao website. The shopping cart allows users to easily add the items they want to buy to the shopping cart, check the quantity and total price of the items at any time, and perform other operations such as deleting and modifying the quantity of items. In the Taobao website, the implementation of the shopping cart function is inseparable from the PHP array. Let's discuss in detail the application of php arrays in Taobao shopping cart pages. 1. Introduction to Taobao shopping cart page Taobao shopping cart page is a very important page in Taobao website. It is a page for

2023-04-26 comment 0 686

Detailed introduction to Taobao shopping cart

Course Introduction：This article mainly introduces the relevant information on JavaScript to implement shopping cart special effects. The article introduces in detail through sample code how to use JavaScript to implement functions such as single selection, all selection, deletion, and modification of products in Taobao shopping cart. Friends who need it can For reference, let’s take a look below. Preface I believe everyone is familiar with the function of the product shopping cart. Whenever we purchase products on a certain website, which product we like, we will add it to the shopping cart and finally settle the bill. The shopping cart function facilitates consumers to manage products. They can add products, delete products...

2017-06-14 comment 0 3052

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