PHP Basics
| 6. | Which of the following is not a valid data type in PHP? |
|---|
A. String
B. Integer
C. Boolean
D. Double
View Answer Discuss Work SpaceAnswer: option d
Explanation:
Double is not a valid data type in PHP. Instead, PHP uses the float data type to represent floating-point numbers.
| 7. | Which of the following is used to test if two values are equal in PHP? |
|---|
A. ==
B. =
C. ===
D. !=
View Answer Discuss Work SpaceAnswer: option a
Explanation:
The double equals sign (==) is used to test if two values are equal in PHP.
| 8. | Which of the following is used to test if two values are identical in PHP? |
|---|
A. ==
B. =
C. ===
D. !=
View Answer Discuss Work SpaceAnswer: option c
Explanation:
The triple equals sign (===) is used to test if two values are identical in PHP. This means that they not only have the same value, but also the same data type.
| 9. | Which of the following is used to test if a variable is empty in PHP? |
|---|
A. isset()
B. empty()
C. null()
D. unset()
View Answer Discuss Work SpaceAnswer: option b
Explanation:
The empty() function is used to test if a variable is empty in PHP.
| 10. | Which of the following is used to include a file in PHP? |
|---|
A. include()
B. require()
C. both A and B
D. neither A nor B
View Answer Discuss Work SpaceAnswer: option c
Explanation:
Both include() and require() are used to include a file in PHP. The main difference between them is that require() will generate a fatal error if the file cannot be found, while include() will only generate a warning.