- 1. Which function returns the number of characters in a string?
A) Strrev()
B) Strlen()
C) Ucwords()
D) Str_word_count()
- 2. Which function counts the number of words in a sentence or phrase?
A) Count()
B) Strpos()
C) Str_word_count()
D) Lcfirst()
- 3. Which function reverses a string?
A) Ucfirst()
B) Strrev()
C) Implode()
D) Strcmp()
- 4. Which function gives the position of a string in another string?
A) Count()
B) Ucwords()
C) Strtolower()
D) Strpos()
- 5. Which function capitalizes the first letter of each word?
A) Strtoupper()
B) Strrev()
C) Ucwords()
D) Ucfirst()
- 6. Which function converts a whole string to uppercase?
A) Strtoupper()
B) Implode()
C) Strtolower()
D) Lcfirst()
- 7. Which function converts a whole string to lowercase?
A) Substr()
B) Strtolower()
C) Ucfirst()
D) Ucwords()
- 8. Which function compares two strings for equality?
A) Strlen()
B) Count()
C) Strrev()
D) Strcmp()
- 9. Which function extracts a portion of a string?
A) Substr()
B) Strtoupper()
C) Ucwords()
D) Strpos()
- 10. Which function combines elements of an array into a string?
A) Implode()
B) Count()
C) Strcmp()
D) Ucfirst()
- 11. Which function counts elements in an array?
A) Ucwords()
B) Implode()
C) Str_word_count()
D) Count()
- 12. Which function makes only the first letter of a string lowercase?
A) Strtolower()
B) Ucfirst()
C) Lcfirst()
D) Ucwords()
- 13. Which function makes only the first letter of a string uppercase?
A) Strrev()
B) Ucwords()
C) Ucfirst()
D) Strtoupper()
- 14. Which loop type executes a block a fixed number of times?
A) switch
B) for
C) if
D) goto
- 15. Which loop executes as long as a condition is true, checked before the first run?
A) if
B) for
C) while
D) do...while
- 16. What is the result of this post-increment operation? $x = 5; $y = $x++;
A) $y = 6
B) $x = 3
C) $y = 5
D) $x = 4
- 17. What is the result of this post-decrement operation? $x = 10; $y = $x--;
A) $y = 11
B) $x = 10
C) $y = 10
D) $y = 9
- 18. What is the result of this pre-increment operation? $x = 3; $y = ++$x;
A) $y = 3
B) $y = 5
C) $x = 3
D) $y = 4
- 19. What is the result of this pre-decrement operation? $x = 10; $y = --$x;
A) $y = 10
B) $x = 10
C) $y = 9
D) $x = 9
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