The importance of algorithms to phper? How important is it? We sincerely invite PHPer to discuss it.

The importance of algorithms to phper? How important is it? We sincerely invite PHPer to discuss it.

..... 2018-07-05 15:17:08 0  2  1751

The importance of always catching errors in Promises

I'm using the @typescript-eslint/no-floating-promises rule in my project. If I write code like this, this rule complains - functionReturningPromise().then(retVal=>doSomething(retVal)); and it wants me to add a catch block for this Promise. This makes sense to me if I want to add some logic in the...

P粉590929392 2024-03-19 21:05:20 0  1  402

What is JavaScript garbage collection?

What is JavaScript garbage collection? For web programmers, understanding the importance of JavaScript garbage collection is important in order to write better code.

P粉334721359 2023-08-17 11:15:23 0  2  565

How to cancel tracking of a file in GIt

I don't want Git to track this disimportant file. I can create a .gitignore file to untrack it, but is there any command that can achieve better results?

我想大声告诉你 2017-05-17 10:02:56 0  4  939

Importance of Ajax add to cart button with custom fields on single product page

I'm trying to edit the "Add to Cart" button for a single product page. Successfully added a custom ajax call using LoicTheAztec's solution. The code runs just fine. However, I need to change $product_id in the solution's code to the product's custom field value, which is "custom_id&qu...

P粉959676410 2023-09-01 16:28:19 0  1  522

Does field order matter in multi-column index in MySQL?

I know the importance of indexes and how join order changes performance. I've read a lot related to multi-column indexes but didn't find an answer to my question. I'm curious if the order in which they are specified matters if I do a multi-column index. My guess is no, and the engine will treat them...

P粉002023326 2023-10-21 22:05:44 0  2  639

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 wo...

P粉178132828 2023-09-05 11:18:47 0  1  750

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 ContactNam...

P粉237125700 2023-09-05 14:46:42 0  1  684

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: ...

P粉212114661 2023-09-05 15:18:28 0  1  578

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

P粉076987386 2023-09-05 15:06:32 0  1  540

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...

P粉369196603 2023-09-05 15:34:44 0  1  966

How to get average of DATETIME column in MySQL while grouping by other columns

I'm creating and populating a MySQL table using the following query: SETtime_zone='+00:00';CREATETABLEtimestamp_n_datetime(idINT,timeDATETIME,avg_timeDATETIME);INSERTINTOtimestamp_n_datetime(id,time,avg_time)VALUES("1","2023-01-0310:

P粉460377540 2023-09-05 11:46:21 0  1  483

Multi-device (mobile phone) synchronization - React Native

I'm trying to create a Lightshow that will launch on all users' mobile devices at the same time (can have up to 2000-3000 users). All users will use the Internet (Wi-Fi or mobile data). In our FE we use Apollo for subscriptions and it works like a charm. But the problem is, user A can get subscribed...

P粉151466081 2023-09-05 11:58:38 0  1  666

Spades, Diamonds, Hearts, Clubs => styles do not change font color in Chrome for Android

In Google Chrome on Windows, the card suit symbols (spades, hearts, diamonds, clubs) are colored correctly using the "style" attribute. Unfortunately, the same page displayed in Google Chrome on Android does not display the colors I defined but uses the default black and red. (See the atta...

P粉896751037 2023-09-05 15:25:13 0  1  734

How to hide mui TextField label?

I'm developing a Nextjs app and I have a dashboard navigation bar built with mui that contains a notification that opens the notification box, which is built with regular HTML and CSS. dashboard-navbar.js: importNotificationBoxfrom"./notification-box/notification-box";//...exportconstDashb...

P粉239164234 2023-09-05 15:41:00 0  1  632

Custom Bootstrap 5 carousel on mobile (multiple items, but not in one row)

I'm having trouble trying to customize the carousel layout on mobile devices. I want it to show every item of the carousel on mobile instead of just one, but after trying with some CSS and JS, especially using displayfloat or max-witdh I'm just starting to think this isn't possible, Or I don't know ...

P粉763662390 2023-09-05 11:53:56 0  1  574

How to use Firebase Authentication with multiple login methods and role-based authentication?

I am creating a react.js application with nodejs as backend and I want to use these authentication methods to login using email/password, login using google and login using phone, now I want to keep the uniqueness of the user while signing the user's name for Any of these, I will also get other deta...

P粉574695215 2023-09-05 12:18:10 0  1  627