


Super comprehensive collection of PHP interview questions Page 1/2_PHP Tutorial
1. Use PHP to print out the time of the previous day in the format of 2006-5-10 22:21:21 (2 points)
2. The difference between echo(), print() and print_r() (3 points)
3. Templates that enable HTML and PHP to be used separately (1 point)
4. What tools are used for version control? (1 point)
5. How Implement string flipping? (3 points)
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6. Methods to optimize MYSQL database. (4 points, the more you write, the more you get)
7. The meaning of PHP (get 1 point)
8. What is the function of MYSQL to get the current time?, and the function of formatting the date is (2 Points)
9. A method to intercept Chinese text strings without garbled characters. (3 points)
---------------------------------------- -----------------------
10. Have you ever used version control software? If so, the name of the version control software you use is ?(1 point)
11. Have you ever used a template engine? If so, what is the name of the template engine you use? (1 point)
12. Please briefly describe what you are most proud of Development work (4 points)
13. What method do you use to solve the traffic problem for a website with large traffic? (4 points)
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14. Use PHP to write the code to display the client IP and server IP 1 point)
15. What is the difference between the include and require statements? Why? To avoid including the same file multiple times, use (?) statements to replace them? (2 points)
16. How to modify the survival time of SESSION (1 point).
17. There is a web address , For example, the homepage of the PHP Research Laboratory: http://www.php100.com, how to get its content? ($1 point)
18. In HTTP 1.0, the meaning of status code 401 is (?); If the prompt "File not found" is returned, you can use the header function, whose statement is (?); (2 points)
19. In PHP, heredoc is a special string, and its Is the end mark required? (1 point)
20. Talk about the advantages and disadvantages of asp, php, jsp (1 point)
21. Talk about the understanding of mvc (1 point)
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22. Write the SQL of the names of the ten people with the most posts, using the following table: members(id, username, posts, pass, email) (2 points)
23. Please explain the difference between passing values and passing references in PHP. When to pass by value and when to pass by reference? (2 points)
24. What is the function of error_reporting in PHP? (1 point)
25. Please write a function to verify the email Is the format correct (2 points)
26. Briefly describe how to get the current execution script path, including the obtained parameters. (2 points)
27. How to modify the survival time of SESSION. (1 point)
------------------------ -----------------------------------------------
28. What is the pop-up dialog box function of a JS form? What is the function to obtain input focus? (2 points)
29. What is the redirect function of JS? How to introduce an external JS file? (2 points)
30. What is the difference between foo() and @foo()? (1 point)
31. How to declare a class named "myclass" without methods and attributes? (1 Points)
32. How to instantiate an object named "myclass"? (1 point)
33. How do you access and set the properties of a class? (2 points)
34. What is the difference between mysql_fetch_row() and mysql_fetch_array? (1 point)
-------------------------- ---------------------------------------------
35. What is the GD library used for? (1 point)
36. Point out some ways to enter a piece of HTML code in PHP. (1 point)
37. Which of the following functions can open a file for reading and writing? (1 point)
(a) fget() (b) file_open() (c ) fopen() (d) open_file()
38. Which of the following options does not add john to the users array? (1 point)
(a) $users[] = 'john';
(b) array_add($users,'john');
(c) array_push($users,'john');
(d) $users ||= 'john';
39. Will the following program be input? (1 point)
$num = 10;
function multiply(){
$num = $num * 10;
}
multiply ();
echo $num;
?>

PHP is a server-side scripting language used for dynamic web development and server-side applications. 1.PHP is an interpreted language that does not require compilation and is suitable for rapid development. 2. PHP code is embedded in HTML, making it easy to develop web pages. 3. PHP processes server-side logic, generates HTML output, and supports user interaction and data processing. 4. PHP can interact with the database, process form submission, and execute server-side tasks.

PHP has shaped the network over the past few decades and will continue to play an important role in web development. 1) PHP originated in 1994 and has become the first choice for developers due to its ease of use and seamless integration with MySQL. 2) Its core functions include generating dynamic content and integrating with the database, allowing the website to be updated in real time and displayed in personalized manner. 3) The wide application and ecosystem of PHP have driven its long-term impact, but it also faces version updates and security challenges. 4) Performance improvements in recent years, such as the release of PHP7, enable it to compete with modern languages. 5) In the future, PHP needs to deal with new challenges such as containerization and microservices, but its flexibility and active community make it adaptable.

The core benefits of PHP include ease of learning, strong web development support, rich libraries and frameworks, high performance and scalability, cross-platform compatibility, and cost-effectiveness. 1) Easy to learn and use, suitable for beginners; 2) Good integration with web servers and supports multiple databases; 3) Have powerful frameworks such as Laravel; 4) High performance can be achieved through optimization; 5) Support multiple operating systems; 6) Open source to reduce development costs.

PHP is not dead. 1) The PHP community actively solves performance and security issues, and PHP7.x improves performance. 2) PHP is suitable for modern web development and is widely used in large websites. 3) PHP is easy to learn and the server performs well, but the type system is not as strict as static languages. 4) PHP is still important in the fields of content management and e-commerce, and the ecosystem continues to evolve. 5) Optimize performance through OPcache and APC, and use OOP and design patterns to improve code quality.

PHP and Python have their own advantages and disadvantages, and the choice depends on the project requirements. 1) PHP is suitable for web development, easy to learn, rich community resources, but the syntax is not modern enough, and performance and security need to be paid attention to. 2) Python is suitable for data science and machine learning, with concise syntax and easy to learn, but there are bottlenecks in execution speed and memory management.

PHP is used to build dynamic websites, and its core functions include: 1. Generate dynamic content and generate web pages in real time by connecting with the database; 2. Process user interaction and form submissions, verify inputs and respond to operations; 3. Manage sessions and user authentication to provide a personalized experience; 4. Optimize performance and follow best practices to improve website efficiency and security.

PHP uses MySQLi and PDO extensions to interact in database operations and server-side logic processing, and processes server-side logic through functions such as session management. 1) Use MySQLi or PDO to connect to the database and execute SQL queries. 2) Handle HTTP requests and user status through session management and other functions. 3) Use transactions to ensure the atomicity of database operations. 4) Prevent SQL injection, use exception handling and closing connections for debugging. 5) Optimize performance through indexing and cache, write highly readable code and perform error handling.

Using preprocessing statements and PDO in PHP can effectively prevent SQL injection attacks. 1) Use PDO to connect to the database and set the error mode. 2) Create preprocessing statements through the prepare method and pass data using placeholders and execute methods. 3) Process query results and ensure the security and performance of the code.


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