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This article shows you what good habits PHP code has, the content is concise and easy to understand, absolutely can make you shine, through the detailed introduction of this article I hope you can gain something.

specific contents are as follows

1. Read more manuals and source codes

Nothing is more important than reading the manual-you can learn a lot just by reading the manual, especially a lot about string and array functions. There are many useful functions in these functions, and if you read the manual carefully, you will often find that in the past project development process, many times you are "reinventing the wheel" when in fact you only need a core function to complete the corresponding function. The manual is your friend. In addition, there are many open source programs developed using PHP. Why not learn and learn? Download a copy of the open source PHP application source code and read it carefully. Perhaps the larger the project, the more worthwhile it is to read, although they may have more complex structures and systems, but they also have more detailed explanation documents.

2. Write modular code

Good PHP code should be modular code. PHP's object-oriented programming capabilities are some of the most powerful tools for breaking down your application into functions or methods. You should separate as much front-end HTML/CSS/JavaScript code as possible from the server-side of your application, and you can follow the MVC (Model-View-Controller) pattern on any PHP framework.

3. Code writing specification

Good PHP code should have a complete set of coding conventions. Programming conventions such as naming variables and functions, uniform access to databases and error handling, and the same code indentation can make your code more readable.

4. Write portable code

Good PHP code should be portable. You can use php's existing features, such as magic quotes and short tags. Try to understand your requirements and then write code that is independent and portable by adapting it to PHP features.

5. Write security code

Good PHP code should be safe. PHP5 offers excellent performance and flexibility. But the security problem lies entirely with the developers. For a professional PHP developer, it is crucial to have a deep understanding of major security vulnerabilities such as Cross-Site Scripting (XSS), Cross-Site Request Forgery (CSRF), code injection vulnerabilities, and character encoding vulnerabilities. By using PHP's special features and functions, such as mysql_real_escape_string, etc., you can write safe code.

6. Code comments

Code comments are an important part of code. Code comments can tell you what the variable or function does, which will be useful in future code maintenance.

7. Use single quotes instead of double quotes

Strings always use single quotes instead of double quotes to avoid performance degradation caused by PHP searching for variables within strings. It is faster to enclose strings in single quotes instead of double quotes. PHP searches for variables in double-quoted strings, and single-quoted strings do not.

8. Escape string output

It is a good practice to pass ENT_QUOTES as an argument to the htmlspecialchars function to ensure that single quotes (') are also converted to HTML entities.

9. Use comma separated string output

Outputting a comma (,) delimited string through the echo statement is better than using the string concatenation operator (.) Performance is better.

10. Check the value transmitted before outputting

Check the passed value $_GET <$'query '] before outputting. The isset or empty function can be used to check whether a variable has a null value.

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What are the good habits of PHP code, have you learned knowledge or skills? If you want to learn more skills or enrich your knowledge reserves, please pay attention to the industry information channel.

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