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  1804

How can I reformulate this query without using the AS keyword?

I'm completing a HackerRank challenge, but the documentation says I shouldn't use the AS keyword: I need to rewrite this query in MySQL so that it doesn't include AS in WITHAAS, nor ASWITHAAS in SELECT...AStest(SELECTDISTINCTMAX( LENGTH(customer_id))AStestFROMordersUNIONSELECTDISTINCTMIN(LENGTH(cust...

P粉765570115 2024-01-16 20:23:51 0  1  454

mysql - Is it necessary to set a separate column as the primary key for the intermediate relational table in the database?

For example, the common role-user association table between roles and users has the following fields: role_iduser_id. When there are these two fields, is it necessary to set up a separate column of id as the primary key?

phpcn_u1582 2017-06-22 11:54:41 0  4  1212

Can mysql extract two fields to combine?

It is necessary to extract the contents of two fields in mysql. One is the keyword, and the other is the link corresponding to the keyword. Is there any way to extract it and combine it? Duplication also needs to be removed because the keywords in mysql are repeated with the corresponding links to a...

伊谢尔伦 2017-05-16 13:05:40 0  2  471

Regular expression - PHP regular expression determines whether there are specified keywords in a and img tags

What I want to implement is the keyword replacement function. a, img contains keywords and cannot be replaced. If [Example] is a keyword, the keyword appears in these three situations and cannot be replaced, otherwise it will destroy the html structure {code...} I wrote a crappy function. It doesn't...

欧阳克 2017-06-21 10:10:32 0  1  1278

php - Colleagues, please share your design ideas.

I want to make such a backend, and the requirements are: 1. Make a backend that adds keywords. . There are various categories and permission management. . . 2. Add a keyword with associated voice, associated answers, associated videos, animations and other learning resources. For example: I want to ...

我想大声告诉你 2017-06-26 10:49:03 0  1  843

javascript - Is there any plug-in related to text highlighting in the input box? Can you recommend it?

To do a keyword search function

迷茫 2017-05-19 10:16:27 0  1  673

USE keyword

After the use keyword is introduced into a class, can the attributes of this class be directly called?

玉簟秋 2020-01-07 10:38:29 0  1  1425

There is a problem with the self-study example code

PHP global keyword The global keyword is used to access global variables within a function. To call global variables defined outside the function within a function, we need to add the global keyword before the variables in the function: Example<?php$x=5;$y=10;function myTest(){global $x,$y ;$y=$x...

phpcn_u2188 2017-05-15 12:43:11 0  1  494

javascript - How to control model switch using antd model in react

How to use antd model in react to control the model switch parent primary key component passed in attribute {code...} advSimpleInfoModel parent component state object {code...} child primary key {code...} child component attribute changes the incoming value but Pop-up windows cannot appear {code...}

给我你的怀抱 2017-06-05 11:11:44 0  2  1032

Bro, please help me

$keywords = "Keyword 1, Keyword 3, Keyword 2" $body = "This is a piece of content, there will be html code in the content" Now we need to randomly select a value from $keywords and insert it into $body randomly. I tried it myself and it inserted it into the html tag. How can I av...

2020-09-20 12:23:48 0  1  1121

query - 怎样基于Redis实现模糊查询

问题如题，注意不是指模糊查询Key，是指对值的模糊(关键字)查询。举个栗子： {代码...} 假如有上述用户数据，以哈希形式存储，如果要做排序，可以 {代码...} 但如果需要既实现根据年龄排序，还要能够实现关键字查...

某草草 2017-04-24 16:00:35 0  3  1321

Fuzzy query implements a sorting

The two conditions of fuzzy query are the title and the data found from the content. The data that satisfies the keywords in the title must be displayed first, and then the data with keywords in the displayed content must be displayed first.

懒货 2020-09-16 08:46:47 0  1  996

php - A question about google search

Using PHP to create a search function can be understood as a simple global keyword search [which does not involve any word delimitation or intelligent recognition]. For example, if I want to search for the keyword "", I want to add "simultaneously" under the search box. Display B...

淡淡烟草味 2017-05-24 11:30:43 0  1  698

Buttons tag is crucial for Jquery Attr to work

The atrr function is not giving the desired response, I have a small code that gets data from an external API which has several data in a dict. <divid="facet-knowledge-panel"style="margin-left:70px;"><h2id="facet_panels_title"></h2><divid=

P粉141035089 2024-02-04 11:27:56 0  1  609

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  443

Java thread monitoring, thread restart, observer mode issues

Regarding the issue of thread monitoring restart, I read http://www.cnblogs.com/ae6623... The observer pattern introduced in this article I think puts the key code for restarting the thread into the catch block in the thread body. What should I do if the exception is not caught? I don’t know much ab...

天蓬老师 2017-05-27 17:41:04 0  2  814