50 PHP Coding Interview Questions

50 PHP Coding Interview Question

As PHP continues to be one of the most popular programming languages for web development, it’s no surprise that many companies are looking for skilled PHP developers to join their teams. If you’re a PHP developer, you may be wondering what kinds of questions you can expect in a job interview. To help you prepare, we’ve put together a list of 50 common PHP interview questions.

Here is the list of 50 PHP Coding Interview Questions –

1. What is PHP?
2. What are the differences between PHP 5 and PHP 7?
3. What are the new features in PHP 7?
4. What are the data types supported in PHP?
5. What is the difference between echo and print?
6. How can you declare a variable in PHP?
7. How can you check if a variable is set or not?
8. How can you convert a string to an array in PHP?
9. What is a constant in PHP?
10. How can you define a constant in PHP?
11. What is the difference between require and include in PHP?
12. What is a namespace in PHP?
13. How can you use namespaces in PHP?
14. What is an abstract class in PHP?
15. What is an interface in PHP?
16. What is the difference between an abstract class and an interface?
17. What is polymorphism in PHP?
18. What is encapsulation in PHP?
19. What is inheritance in PHP?
20. What is a trait in PHP?
21. What is the use of the final keyword in PHP?
22. What is a constructor in PHP?
23. What is a destructor in PHP?
24. What is the difference between a public, private, and protected property or method in PHP?
25. What is a static method in PHP?
26. What is the difference between self and this in PHP?
27. What is a singleton class in PHP?
28. What is a factory method in PHP?
29. What is a design pattern in PHP?
30. What is a callback function in PHP?
31. What is the difference between call_user_func() and call_user_func_array() in PHP?
32. How can you handle exceptions in PHP?
33. What is the use of the try-catch block in PHP?
34. What is an SPL in PHP?
35. What is the use of an SPL in PHP?
36. What is a PDO in PHP?
37. What is the use of PDO in PHP?
38. What is a prepared statement in PHP?
39. What is the difference between mysqli and PDO in PHP?
40. How can you connect to a database using PDO in PHP?
41. How can you prevent SQL injection in PHP?
42. What is a session in PHP?
43. What is a cookie in PHP?
44. What is the difference between a session and a cookie in PHP?
45. How can you store and retrieve data from a session in PHP?
46. What is a CSRF attack in PHP?
47. How can you prevent a CSRF attack in PHP?
48. What is XSS in PHP?
49. How can you prevent XSS in PHP?
50. What is a composer in PHP?