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Preview of the teaching course on September 10, 2018: How to implement paging query data table and classification query for class encapsulation in PHP

Preview of the teaching content of the third online class of PHP Chinese website on September 10, 2018: 1. Teaching topic: How to use PHP to implement paging query data tables? Encapsulate classification queries into classes to achieve code reuse. For more detailed knowledge points, please pay atten...

藏色散人 2018-09-10 10:02:37 0  0  1376

php - How to implement the background search for the classification list of the classification module? Looking for ideas

To achieve this effect? How should this be achieved? Looking for ideas? How should the front end be laid out? How should the data be processed?

伊謝爾倫 2017-05-16 13:10:38 0  2  540

javascript - All promises return to resolved status. Why is promise.all still not executed?

I think it may be because I defined getData globally, so the promise cannot get the status. Otherwise, why are the functions in the failure state of promise.all not executed? I hope Daniel can help me answer it.

習慣沉默 2017-07-05 10:41:33 0  1  1299

mysql - Interview question: How to print PHP three-level classification into a table for display?

1. The structure of the classification table category is basically composed of three main fields: id, name, and parent_id. 2. It needs to be printed and displayed in such a table format. 3. How should I write PHP code? (Allows database tables to be redesigned)

漂亮男人 2017-05-16 13:01:50 0  6  806

How to install and use the PHP programmer toolbox of PHP Chinese website?

What are the functions of the PHP Programmer Toolbox on PHP Chinese website? How is it installed and used?

z老師 2018-07-12 16:38:23 0  2  2862

Revealing the secrets of recursive functions in PHP for ordinary people

Can anyone explain to me recursive functions in PHP (without using Fibonacci) in layman's terms and using examples? I'm looking at an example but Fibonacci is completely lost on me! Thank you in advance ;-) Also, how often do you use them in web development?

P粉211600174 2023-10-17 08:41:23 0  2  877

laravel - pros and cons of php static functions and public methods

Benefits of static functions: 1. Object-oriented 2. Memory-resident, faster 3. Convenient management such as Yii::app()->params[$name]; Benefits of public methods: 1. Convenient calling such as app_param($name ); When setting up a function, how should I choose to create it as a static functio...

typecho 2017-06-26 10:49:16 0  2  1035

javascript - Doubts about Promise asynchronous operations, and how to write them more elegantly

I have read a lot of technical posts about "promise" in the past few days. I am dazzled by them, and I have only a little understanding of their functions. Let’s talk about the problem first. Ajax is used most in the project. There is a very unpleasant problem "multiple ajax dependenc...

大家講道理 2017-07-05 11:04:56 0  3  944

php - Several functional modules share part of the code. I want to modify one of the functions. How to avoid destroying other functions?

Several functional modules have part of the code that is common. If you want to modify one of the functions, you need to modify the common code. How can you avoid damaging other functions when you are not sure which functions reference this code?

怪我咯 2017-05-16 13:08:42 0  13  1341

Get the location information of PromiseRejectionEvent

I have some code where async functions may throw errors and I'm handling them using the unhandledrejection event because those uncaught throws don't fire the error event because they happen inside a Promise. So my error handler is getting a PromiseRejectionEvent instead of an ErrorEvent. So far so g...

P粉447785031 2024-02-17 18:06:26 0  1  636

php - A certain function can be implemented using a function. Is it necessary to use a class to implement it?

I use PHP. Most of the functions in the project I am writing now are encapsulated into functions. When needed, just require, and then pass the parameters to call the function. I don’t know if this will be bad. Is it still possible? Should we use classes to implement it? Take the homepage of the webs...

滿天的星座 2017-05-31 10:33:09 0  10  900

Using Async/Await with .then()

I'm a little confused by the concept of async/await, especially when compared to .then() in functions. I'm currently working on a basic React app and fetching some data in useEffect I'm wondering, since fetch returns a Promise, why I don't need to mark anything as async or await when doing the follo...

P粉545682500 2024-02-03 16:32:02 0  1  614

Migrating to PHP 8.1 - How to fix deprecated passing null to parameter error - Rename build in function

PHP8.1 has deprecated passing null as a parameter to many core functions. My main problem is with functions like htmlspecialchars(php) and trim(php) where null is no longer silently converted to an empty string. To solve this problem without using a lot of code, I tried renaming the original built-i...

P粉420868294 2024-01-10 16:21:21 0  2  693

PHP is used as the background. When a web request comes, can it be processed using multiple processes or threads?

It is said that PHP does not support multi-process, so is this scenario not suitable for PHP? If I want to update the information of a thousand data, upload a sql file, and then execute it one after another, it will definitely be very slow. Can I use pcntl_ related functions in the code to implement...

為情所困 2017-06-05 11:09:26 0  4  744

Please help recommend a PHP and web front-end rapid development framework

I haven’t made anything for many years, and now I want to develop a simple membership-based download system. The function is similar to that of Xinyun CMS, but adding software functions in Xinyun is very cumbersome. I mainly just complete the following functions. 1. Simply add necessary information ...

俺老劉 2019-03-01 11:39:33 0  3  1398

php - What can a for loop be used for?

Many functions in PHP are implemented using for loops. For example, string conversion problems, calculating the number of executions, etc. I feel that the for loop is very useful and can solve many underlying problems. Can any expert summarize the use of for loops in programming?

高洛峰 2017-05-17 09:55:18 0  2  666

PHP—Implementation of questionnaire survey function based on Yii2 framework

The questionnaire based on the Yii2 framework has three types of questions: single-choice, multiple-choice, and text input. How can these three functions be implemented using PHP language? I'm urgently looking for the answer, thank you!

紫顰晨曦 2019-08-22 17:41:19 0  1  1487

javascript - How to avoid duplication of development and maintenance of multiple versions when providing enterprise services? How to design front-end and back-end PHP to improve scalability?

Using PHP to develop enterprise service systems requires providing different versions of the system for different customers. Most of the system requirements for each version are the same. How to avoid repeated development and maintain multiple versions? How to design front-end and back-end PHP to im...

黃舟 2017-05-16 13:15:24 0  1  517

PHP nested function and anonymous function scope issues

{Code...} All functions and classes in PHP have global scope and can be defined within a function and called outside it, and vice versa. Why can function b obtain the local variables of function a by passing parameters? {Code...} Similarly, why does the anonymous function also obtain external variab...

phpcn_u1582 2017-05-18 10:45:34 0  1  733

Teach you how to separate thinkphp view hierarchy blocks

<1>. A brief introduction to the new custom built-in module: the coupling of view-level distributed applications and module chain calls provides developers with a better experience in view-level optimization. I added custom view hierarchy and module calling functions. If you need a more detail...

mrso 2019-11-15 09:03:02 0  0  1158