How does php implement java's sha1 encryption?

How does php implement java's sha1 encryption?

张启华 2017-12-22 23:42:22 0  2  1273

Laravel implements daily event loop

Does anyone know how to implement a loop of daily events. In my case I have 10 events see it as event 1, event 2, event 3 and.... how can I do that let's say Monday event 1 Tuesday event 2 Wednesday event 3 Thursday event 4 weeks Five activities 5 Saturday activities 6 Sunday activities 7 Monday act...

P粉609866533 2024-03-28 16:15:14 0  2  509

javascript - How do you implement front-end paging?

I can implement paging in the back-end nodejs, but how to write the front-end code?

滿天的星座 2017-07-05 10:58:25 0  4  1013

nginx caches js, css, images and other information. What is the implementation principle?

nginx caches js, css, images and other information. What is the implementation principle?

高洛峰 2017-05-16 17:23:04 0  1  1050

node.js - Let me explain the implementation principle of fs module watch in node

Let’s explore the implementation principle of fs module watch in node. {Code...} How does fs implement event notifications in response to file changes? If it is by monitoring file size changes, or something else? Here are some things you can see through the node source code: {code...} The following ...

ringa_lee 2017-05-27 17:44:10 0  2  1221

Has anyone implemented a presentation feature in the Apache Calcite adapter?

I want to implement a showfoo command related to the database engine we wish to connect to Calcite via the Calcite adapter. Of course, foo is something specific to that database engine. I'm trying to figure out which relnode it should be mapped to (among other details). So if anyone has implemented ...

P粉885035114 2023-09-02 12:15:50 0  1  492

How does MySQL implement nesting of another table within a table?

1. I am a database novice... If I want to implement column A in table 1 of database and nest the column BCD in table 2, how should I do it? Use foreign keys? 2. If I use foreign keys, I always get an error when I create and save the foreign keys: {code...} What is going on with this problem? What to...

为情所困 2017-05-18 10:50:13 0  1  690

php implements real-time search

How to implement real-time search box under thinkphp3.2? ? If possible, could you please be more detailed? Thank you! !

黄舟 2017-05-31 10:34:36 0  4  823

javascript - How does vue2.0 use component custom tags to implement component nesting?

I want to implement component nesting in this way: {code...} The current implementation method is: index.html nested in the template in app-content.vue {code...} main.js {code. ..} app.js {code...} app-content.vue {code...}

扔个三星炸死你 2017-06-26 10:50:58 0  1  940

java - Why does HashMap both inherit AbstractMap and implement the Map interface?

We know that AbstractMap has already implemented the Map interface. Why does HashMap need to implement the Map interface one more time? Even if I remove the Map interface from the source code, no error will be reported. What is the reason for this?

巴扎黑 2017-05-17 09:59:01 0  1  709

PHP implements file uploading to a specified folder, and the file path or name is stored in the database. How to achieve this?

PHP implements file uploading to a specified folder, and the file path or name is stored in the database. How to achieve this?

2018-09-26 01:40:34 0  2  1224

javascript - Is there a way to implement HTTP long connection through JS on the client side

As mentioned in the title, I need to frequently request data from a specific server and keep establishing connection requests. This will cause a lot of overhead. I wonder if JS has a way to implement HTTP long connections, and subsequent data requests will continue to be repeated. Use this connectio...

高洛峰 2017-05-19 10:30:44 0  7  547

laravel - How to implement this kind of business logic? Pets work offline and grow regularly, how to achieve it with php+mysql

How to implement this business logic? Pets work offline and grow regularly, how to achieve it with php+mysql

世界只因有你 2017-05-16 16:52:27 0  2  636

javascript - addEventListen passes this into the second parameter to implement binding events

Recently, I was looking at the source code implementation of some libraries and discovered that this was passed into the second parameter of addEventListener. I felt confused, so I came up to ask questions. The following code is my simple simplified and tested {code...} Why can events be bound in th...

怪我咯 2017-05-18 11:03:11 0  2  959

It's the <Implementation Content Details Page> section. In the first line, what does the model attribute mean? What is its use?

It’s the <Implementation Content Details Page> section. In the first line, what does the model attribute mean? What is its use?

小李大人 2018-03-01 10:01:47 0  0  961

Sinon implements simulation of AWS DynamoDB connection calls

I have an endpoint in APIGateway that maps to a Lambda function in AWS. When writing test cases for the new handler function of the endpoint, I don't want the spec file to call the actual API or connect to DynamoDB. I tried adding sinon.stub but it still calls connect to DynamoDB and the test case f...

P粉633733146 2024-03-21 21:36:37 0  2  390

javascript - Use canvas to implement electronic signature, position the coordinates of the mouse in the canvas

When trying to use canvas to implement an electronic signature, the coordinates of the mouse in the canvas cannot be accurately obtained. {Code...} Use ev.clientY to obtain the coordinates of the mouse, but canvas.offsetTop obtains the height from the parent element. And canvas is in a form with scr...

巴扎黑 2017-05-16 13:36:00 0  1  593

javascript - How does a method in vuex state management mutations call another fangfa? How does a method call itself to implement recursive calls?

Make a component in vue and want to use vuex to manage it. But I encountered a problem. One method in mutations wants to use another method in mutations. How to achieve this? There is also a method in mutations that wants to call itself to implement recursive calls. How to achieve this? ? ?

迷茫 2017-05-19 10:43:03 0  1  1227

Learn how to implement pagination or filtering functionality in Next.js

I'm looking for a solution to implement paging or filtering in my web application using traditional page routing methods. Do I need to use client side data fetching? When the query string changes, it will not cause the page content to be re-rendered. I don't want to use SSG to get the entire data an...

P粉517814372 2023-08-14 20:23:46 0  1  713

php+workerman implements new order prompt voice

Dear masters, I would like to ask: There is an order process now. After the user places a dingdan order, the background reminds the administrator that there is a new dingdan reminder. 1. How to use Workerman to implement it? Or other methods? 2. How do you know if a dingdan is a new dingdan? 3. When...

A峰 2020-04-12 13:11:18 0  2  1906