OOPS PHP Interview Questions

30 OOPS PHP Interview Questions

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Below are some of the OOPS PHP interview questions expected in technical Interview.

  1. What is the difference between abstract classes and interfaces in PHP?
  2. How can you implement inheritance in PHP?
  3. What is the difference between public, private, and protected access modifiers in PHP?
  4. What is a static method in PHP, and how can you call it?
  5. How can you handle exceptions in PHP?
  6. What is the use of the try-catch block in PHP?
  7. What is the difference between POST and GET methods?
  8. What is a constructor in PHP, and how can you define it?
  9. What is the use of __toString() method in PHP?
  10. What is the use of a namespace in PHP, and how can you define it?
  11. How can you use regular expressions in PHP?
  12. What is the use of preg_match() function in PHP?
  13. How can you implement a singleton pattern in PHP?
  14. What is the use of a factory design pattern in PHP?
  15. What is the difference between a stack and a queue in PHP?
  16. What is the use of the array_map() function in PHP?
  17. What is the use of the array_walk() function in PHP?
  18. What is the use of the array_filter() function in PHP?
  19. What is the use of the array_reduce() function in PHP?
  20. What is the difference between array_merge() and array_combine() functions in PHP?
  21. How can you sort an array in PHP?
  22. What is the difference between sort() and asort() functions in PHP?
  23. What is the use of the array_reverse() function in PHP?
  24. How can you loop through an array in PHP?
  25. What is the use of the foreach loop in PHP?
  26. What is the use of the array_slice() function in PHP?
  27. What is the use of the array_search() function in PHP?
  28. What is the use of the in_array() function in PHP?
  29. What is the use of the array_key_exists() function in PHP?
  30. What is the use of the array_unique() function in PHP?

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