PHP Interview Questions

1. What is PHP.
2. What is a Session in PHP.
3. What is the difference between include and require.
4. What is urlencode and urldecode.
5. What are the different types of errors in PHP.
6. Explain how to submit form without a submit button.
7. What are the functions for IMAP.
8. How can we increase the execution time of a php script.
9. What is Type juggle in php.
10. What is the difference between mysql_fetch_object and mysql_fetch_array.
11. What is the difference between the functions unlink and unset.
12. What is Joomla in PHP.
13. What is zend engine.
14. What is the difference between Split and Explode.
15. What is the difference between echo and print statement.
16. What is CAPTCHA.
17. How do you create sub domains using PHP.
18. How to upload files using PHP.
19. What is the difference between Notify URL and Return URL.
20. What are the various methods to pass data from one web page to another web page.
21. Write the statements that are used to connect PHP with MySQL
22. How to use HTTP Headers inside PHP? Write the statement through which it can be added.
23. What is the use of PEAR in php.
24. What is the difference between PHP and JavaScript.
25. How the web server interprets PHP and interacts with the client.
26. What is the difference between echo, print and printf().
27. What are the different types of statements that are present in PHP.
28. How can we increase the execution time of a php script.
29. How many different types of messages available in PHP.
30. How error handling is being handled by PHP.
31. What are escaping characters? Explain with an example.
32. What are the different components used in PHP for formatting.
33. What is the use of super-global arrays in PHP.
34. How to create reusable code in PHP.