What are the manuscript structures of php

php's manuscript structure includes: 1. File structure; 2. Identifier naming convention; 3. Comments; 4. File header comments; 5. Code indentation; 6. Definition of functions and classes; 7. Introducing external files; 8. Error handling; 9. Security; 10. Code reuse and other structures.

The operating environment of this tutorial: Windows 10 system, PHP8.1.3 version, Dell G3 computer.

PHP (Hypertext Preprocessor, Hypertext Preprocessor) is a widely used server-side scripting language for developing dynamic web pages and applications. A well-constructed PHP code should have a clear structure for readability and maintainability. In this article, we will discuss several key aspects of PHP code structure.

1. File structure:

PHP code is usually stored in files with a .php extension. Each PHP file usually contains part of HTML code and part of PHP script code. In order to facilitate maintenance, it is recommended to separate HTML and PHP code, put HTML code in one file and separate PHP code.

2. Identifier naming convention:

In order to make the code easier to read and understand, it is recommended to use descriptive variable names and function names. Variable and function names should use lowercase letters and underscores, and follow camel case naming convention. For example, $username and getUserName().

3. Comments:

Good comments are crucial to understanding the purpose and function of the code. Add comments next to key sections of code to help other developers understand the intent of the code. Make sure your comments are clear, concise, and easy to understand.

4. File header comment:

Every PHP file should contain a file header comment at the beginning. This comment usually contains the name of the file's author, the date it was created, and the date it was last modified. This helps track a file's owner and modification history.

5. Code indentation:

Good indentation is the key to code readability and maintenance. Use a consistent indentation style (usually 4 spaces or a tab) to indicate nested relationships between code blocks.

6. Definition of functions and classes:

In PHP, functions and classes are usually defined using the keywords "function" and "class". Function and class definitions should be at the top of the file for easier reading and maintenance. The definition of each function or class should be commented out indicating its purpose and functionality.

7. Introduce external files:

When you need to use the same code block multiple times, you can put it in a separate file and use the "include" or "require" statement to It is imported into the main file. This helps avoid code redundancy and improves code maintainability.

8. Error handling:

In PHP, error handling is very important. Use try-catch blocks to catch and handle errors and exceptions that may occur. Make sure your error handling code logs error messages appropriately.

9. Security:

When developing PHP applications, be sure to consider security. Use secure coding practices to prevent common security vulnerabilities such as SQL injection and cross-site scripting (XSS).

10. Code reuse:

During the development process, try to reuse code blocks as much as possible. Encapsulate reusable code blocks into functions or classes and call them when needed instead of rewriting the same code blocks.

A reasonable PHP code structure helps improve the readability, maintainability and reusability of the code. By following the above guidelines, developers can more easily understand and modify code, thereby increasing development efficiency. Whether it is a personal project or team development, you should focus on good PHP code structure.

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