Are you a good PHP programmer? _PHP Tutorial
The question I will definitely ask when I am an interviewer at SitePoint is: What do you think are the advantages and disadvantages of PHP code? Because this question can give me a general idea of what type of programmer the candidate is, rather than simply testing his mastery of PHP functions (Zend’s PHP certification is good at this, and Yahoo’s PHP programmer interview questions are also such). Importantly, this question lets me know if the candidate has experienced taking over a piece of messy code from a lazy programmer to reuse, or helping other members of the team with this type of thing.
Admittedly, I don’t have a satisfactory answer to this question myself, but I know what answers I want to hear:
Excellent PHP code should be structured. Large sections of code should be divided into functions or methods, while small sections of code that are inconspicuous should be commented so that their purpose will be clear in the future. And the front-end code such as HTML, CSS, Javascript, etc. should be separated from the program as much as possible. PHP's object-oriented programming features can help programmers organize their code in an orderly manner.
Excellent PHP code should be standardized. Whether it's setting naming rules for variable and function names, standardizing reusable processes such as database operations and error handling, or as simple as specifying how code should be indented, these standardizations can make the code more readable. Readability is greatly improved.
Good PHP code should be adaptive. PHP has many features such as magic quotes and short tags. Turning these features on and off will affect the running of the program. So, a good programmer should include appropriate statements in his code to enable the program to adapt to the environment.
Good PHP code should be safe. Although PHP is an efficient and flexible language with no fixed framework, it leaves security issues to programmers. A deep understanding of potential security vulnerabilities, such as cross-site scripting (XSS), cross-site request forgery (CSRF), code injection vulnerabilities, character encoding loop vulnerabilities, etc., is crucial for today's professional programmers.
When a candidate answers these questions, I will know clearly whether I should hire him or her. Of course, sometimes programmers can't articulate the problem well, and we ask them to do some PHP testing. Many of the questions in the test may seem simple on the surface, but they also give candidates a chance to express themselves, because if you look carefully, you can spot the problems.
The following small piece of "poor" PHP code is a simplified test question. This question is like asking: How should you optimize this code?

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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