1. Which of the following is a scalar data type in PHP?
Answer:
Explanation:
Boolean is a scalar data type in PHP, representing two possible values: true or false.
2. What data type is used for textual data in PHP?
Answer:
Explanation:
In PHP, textual data is represented as a string.
3. Which of the following is a compound data type in PHP?
Answer:
Explanation:
Array is a compound data type in PHP, which can hold multiple values of different data types.
4. How is an integer value defined in PHP?
Answer:
Explanation:
Integers in PHP are non-decimal numbers without any quotes.
5. What is the correct way to define a floating-point number in PHP?
Answer:
Explanation:
A floating-point number in PHP is defined as a number with a decimal point.
6. How is a Boolean TRUE value represented in PHP?
Answer:
Explanation:
In PHP, a Boolean TRUE value can be represented as 1, TRUE, or true.
7. What data type does the following PHP variable belong to: $var = "Hello World!";
Answer:
Explanation:
The variable $var is a string because it contains textual data enclosed in quotes.
8. Which of the following data types does not exist in PHP?
Answer:
Explanation:
PHP does not have a data type called Short. It supports Integer, Double, and NULL.
9. What is the data type of a variable that has been assigned the value NULL in PHP?
Answer:
Explanation:
A variable that is assigned the value NULL belongs to the NULL data type.
10. In PHP, what data type is an associative array?
Answer:
Explanation:
Both indexed and associative arrays in PHP are of the Array data type.
11. Which of the following is a special data type in PHP?
Answer:
Explanation:
The Resource type in PHP is a special data type used to store references to external resources.
12. How does PHP treat variables of type Integer and Float during arithmetic operations?
Answer:
Explanation:
PHP automatically converts integers to floats as needed during arithmetic operations.
13. What is the output of var_dump(is_int(25.5)) in PHP?
Answer:
Explanation:
is_int() checks whether a variable is of type integer. 25.5 is a float, not an integer.
14. Which of the following values is considered FALSE in PHP?
Answer:
Explanation:
In PHP, 0, "0", and an empty array are considered as FALSE in a Boolean context.
15. What is the result of gettype(12345.678) in PHP?
Answer:
Explanation:
In PHP, floating-point numbers are considered as type "Double".