Backend Development
PHP Tutorial
Beginner's Guide: How to Draw Stock Candlesticks Using PHP and JS
Beginner's Guide: How to Draw Stock Candlesticks Using PHP and JS
Getting Started Guide: How to Draw Stock Candle Charts Using PHP and JS
Introduction:
Stock candle charts are a commonly used chart type in stock market technical analysis. It can visually display stock price trends and trading activities. This article will introduce how to use PHP and JS to draw stock candle charts, and provide specific code examples to help readers get started.
Part One: Setting up the environment and preparations
Before starting, we need to ensure that the relevant environments for PHP and JS have been installed in the system. If PHP is not installed in the system, you can download the installation package through the official website (https://www.php.net) and install it. JS is a scripting language that runs in the browser and requires no additional installation.
Part 2: Obtaining Stock Data
Before drawing a candle chart, we first need to obtain the historical data of the stock. Data can be obtained through the interface of the stock exchange or a third-party data provider. This article will use a hypothetical data set as an example.
The sample data format is as follows:
[
{
"date": "2022-01-01",
"open": 100,
"high": 110,
"low": 90,
"close": 105
},
{
"date": "2022-01-02",
"open": 105,
"high": 120,
"low": 100,
"close": 115
},
...
]Each data object represents a day's trading, including date, opening price, highest price, lowest price and closing price.
Part Three: Draw Candlestick Chart
Create HTML Page
First, create an HTML file to display the candle chart. In the HTML file, you need to introduce the Chart.js library:<!DOCTYPE html> <html> <head> <title>股票蜡烛图</title> <script src="https://cdn.jsdelivr.net/npm/chart.js"></script> </head> <body> <canvas id="candlestick-chart"></canvas> </body> </html>
Copy after loginWrite JS code
Add the following JS code in the HTML file to obtain stock data and draw candle charts:<script> // 获取股票数据 const stockData = [ // 这里填入获取的股票数据 ]; // 转换数据格式 const chartData = stockData.map((data) => ({ t: new Date(data.date), o: data.open, h: data.high, l: data.low, c: data.close })); // 绘制蜡烛图 const ctx = document.getElementById('candlestick-chart'); new Chart(ctx, { type: 'candlestick', data: { datasets: [{ label: '股票价格', data: chartData }] }, options: { // 可根据需要进行配置，如设置图表样式、颜色等 } }); </script>Copy after loginPart 4: Run the code and view the results
Save the above HTML file as a separate file (such as candlestick.html), and open the file through the browser to run code to view the effect of the drawn candle chart.Summary:
In this article, we introduced how to draw stock candle charts using PHP and JS, and provided specific code examples. By learning these basics, readers can further learn and explore how to use more charting libraries and techniques to display and analyze stock data. I hope this article can be helpful to readers, and I wish you all success in the stock market!The above is the detailed content of Beginner's Guide: How to Draw Stock Candlesticks Using PHP and JS. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1664
14
1423
52
1317
25
1268
29
1242
24
Explain JSON Web Tokens (JWT) and their use case in PHP APIs.
Apr 05, 2025 am 12:04 AM
JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,
Explain late static binding in PHP (static::).
Apr 03, 2025 am 12:04 AM
Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.
PHP Program to Count Vowels in a String
Feb 07, 2025 pm 12:12 PM
A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total
What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases?
Apr 03, 2025 am 12:03 AM
What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.
PHP and Python: Comparing Two Popular Programming Languages
Apr 14, 2025 am 12:13 AM
PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.
PHP in Action: Real-World Examples and Applications
Apr 14, 2025 am 12:19 AM
PHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.
PHP: A Key Language for Web Development
Apr 13, 2025 am 12:08 AM
PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7
The Enduring Relevance of PHP: Is It Still Alive?
Apr 14, 2025 am 12:12 AM
PHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.
