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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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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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Summary of trigger_error function definition and usage

Course Introduction：The trigger_error() function creates a user-level error message. The trigger_error() function can be associated with a built-in error handler, or a user-defined function can be used as a new error handler (set_error_handler()). Syntax trigger_error(errormsg,errortype); Parameter description errormsg is required. Specifies the error message. Maximum length 1024 bytes. errortype is optional. Specifies the error type. possible...

2018-05-02 comment 0 2478

Detailed introduction and usage of trigger_error function

Course Introduction：The trigger_error() function creates a user-level error message. The trigger_error() function can be associated with the built-in error handler, or a user-defined function can be used as a new error handler (set_error_handler()). Syntax trigger_error(errormsg,errortype); Parameter description errormsg is required. Specifies the error message. Maximum length 1024 bytes. errortype is optional. Specifies the error type. possible...

2018-05-09 comment 0 2656

How to use php trigger_error() function?

2017-07-10 comment 0 1957

How to use php trigger_error function

Course Introduction：The php trigger_error function is used to create user-defined error messages. Its syntax is trigger_error(error_message,error_types). The parameter error_message is required and refers to the specified error message. The length is limited to 1024 characters.

2019-05-26 comment 0 4021

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