What to learn in php

What to learn in php: 1. Basic syntax; 2. Database connection; 3. HTML and CSS; 4. File operations; 5. Form processing; 6. Error handling; 7. Security; 8. Frameworks and libraries.

The operating environment of this tutorial: windows10 system, php8.1.3 version, DELL G3 computer.

PHP (Hypertext Preprocessor) is a programming language widely used in web development. It is an open source, object-oriented programming language that is widely used for the development of dynamic web pages. PHP code can be embedded in HTML, allowing developers to embed dynamic content on web pages.

If you are interested in PHP and want to learn it, then here are some main knowledge points you should learn:

1. Basic syntax: Understanding the basic syntax of PHP is the first step in learning PHP Task. You need to master basic concepts such as variables, data types, operators, conditional statements, loop statements, functions, etc.

2. Database connection: The connection between PHP and database is one of its important application scenarios in web development. You should learn how to connect to MySQL or other common relational databases and how to perform queries, inserts, updates, and deletes of data.

3. HTML and CSS: Although PHP itself can embed HTML code, understanding the basics of HTML will help you better understand the application of PHP in web development. In addition, understanding CSS can also help you improve the appearance and layout of your web pages.

4. File Operations: Learning how to read, write, and manipulate files is one of the basic skills of development. In PHP, you can use built-in functions to operate files to achieve file upload, file download and other functions.

5. Form handling: Forms are often required in web applications to collect user-entered data. It's important to learn how to handle form data and perform validation. With PHP, you can obtain form data submitted by users and process, validate and store it.

6. Error Handling: Knowing how to handle errors is a must for writing robust code. In PHP, you can use try-catch blocks to catch and handle exceptions. Learning how to handle errors and exceptions appropriately will make your code more stable and reliable.

7. Security: Security is a very important issue in web development. You'll learn how to prevent common security threats like cross-site scripting (XSS) and SQL injection, and master how to use filters and encryption to protect your users' sensitive information.

8. Frameworks and Libraries: Learning some of the popular PHP frameworks and libraries can help you develop web applications more efficiently. For example, Laravel is an excellent PHP framework that provides rich functions and easy-to-use interfaces to help you quickly build high-quality web applications.

In short, learning PHP takes time and patience, but it is a very useful and powerful programming language that can bring a lot of convenience and fun to your web development journey. Whether you are a beginner or an experienced developer, you should master these basic knowledge points and continue to practice and learn in depth to improve your skill level. I wish you success in learning PHP!

The above is the detailed content of What to learn in php. For more information, please follow other related articles on the PHP Chinese website!