How to write good PHP code? , write php code
Writing good code is an art. If a programmer follows some good programming habits, then he can become an excellent programmer. In fact, you will probably spend more time maintaining the code than you do writing the code; not to mention maintaining the entire application. Establishing good coding habits will improve design factors like modularity, and your code will be easier to understand and, therefore, easier and cheaper to maintain. And bad coding habits will leave flaws in the code and may make the code difficult to maintain.
In this article, we will explore some good programming practices that will help you avoid defects in your code.
1- Write modular code
Good PHP code should be modular code. PHP's object-oriented programming features are particularly powerful tools for breaking your application into functions or methods. You should separate as much as possible the front-end HTML/CSS/JavaScript code from the server-side of your application. You can also follow the MVC (Model-View-Controller) pattern on any PHP framework.
2- Code Writing Standards
Good PHP code should have a complete set of coding standards. Achieving programming standards through naming variables and functions, unified methods for accessing the database and handling errors, and the same code indentation method can make your code more readable.
3- Write portable code
Good PHP code should be portable. You can use PHP's existing features like magic quotes and short tags. Try to understand your needs and then write code to make it independent and portable by adapting PHP features.
4- Write secure code
Good PHP code should be secure. PHP5 provides excellent performance and flexibility. But the security issue 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.
5- Code Comments
Code comments are an important part of the code. Through code comments, you can know what the variable or function does, which will be very useful in future code maintenance.
6- Avoid short tags
Replace all short tags with complete PHP tags.
7- Use single quotes instead of double quotes
Always use single quotes instead of double quotes for strings to avoid performance degradation caused by PHP searching for variables within the string.
8- Escaped string output
Use ENT_QUOTES as a parameter to pass to the htmlspecialchars function to ensure that single quotes (') are also converted into HTML entities. This is a good practice.
9- Use comma-separated string output
Outputting a comma (,)-separated string through the echo statement has better performance than using the string concatenation operator (.).
10- Check the passed value before outputting
Check the passed value $_GET['query'] before outputting. Using the isset or empty function, you can check whether a variable is null.

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


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