# PHP Math MCQ Questions and Answers

## 1. Which function is used to calculate the absolute value of a number in PHP?

a) abs()
b) fabs()
c) absolute()
d) mod()

a) abs()

### Explanation:

The abs() function is used to calculate the absolute value of a number in PHP.

## 2. How do you generate a random number between 5 and 15 in PHP?

a) rand(5, 15)
b) random(5, 15)
c) mt_rand(5, 15)
d) Both a) and c)

d) Both a) and c)

### Explanation:

Both rand() and mt_rand() can be used to generate a random number in the specified range.

## 3. Which function is used to round a float to the nearest integer in PHP?

a) round()
b) floor()
c) ceil()
d) int()

a) round()

### Explanation:

The round() function is used to round a float to the nearest integer.

## 4. What is the result of the expression pow(2, 3) in PHP?

a) 5
b) 6
c) 8
d) 9

c) 8

### Explanation:

pow(2, 3) calculates 2 raised to the power of 3, which is 8.

## 5. How do you calculate the square root of a number in PHP?

a) sqrt()
b) square()
c) root()
d) pow()

a) sqrt()

### Explanation:

The sqrt() function is used to calculate the square root of a number.

## 6. What does the PHP function fmod() do?

a) Finds the modulus of two numbers
b) Rounds a float to the nearest integer
c) Formats a number
d) Converts a number to float

a) Finds the modulus of two numbers

### Explanation:

fmod() returns the floating-point remainder (modulus) of the division of the arguments.

## 7. Which function would you use to format a number with thousands separators in PHP?

a) number_format()
b) format_number()
c) sep_number()
d) thousands_sep()

a) number_format()

### Explanation:

number_format() is used to format a number with grouped thousands.

## 8. How do you calculate the natural logarithm of a number in PHP?

a) log()
b) ln()
c) logn()
d) natural_log()

a) log()

### Explanation:

The log() function is used to calculate the natural logarithm of a number.

## 9. What is the purpose of the PHP function ceil()?

a) Rounds a number down to the nearest integer
b) Rounds a number up to the nearest integer
c) Rounds a number to a specified number of decimal points
d) Finds the ceiling value of a number

b) Rounds a number up to the nearest integer

### Explanation:

ceil() rounds a number up to the next highest integer.

## 10. Which function in PHP is used to get the highest value in an array?

a) max()
b) min()
c) highest()
d) top()

a) max()

### Explanation:

The max() function is used to find the highest value in an array.

## 11. What is the result of the PHP code intval(12.99)?

a) 12
b) 13
c) 12.99
d) Error

a) 12

### Explanation:

intval() converts a float into an integer by truncating the decimal part.

## 12. How do you calculate the cosine of a number in PHP?

a) cos()
b) cosine()
c) cosh()
d) acos()

a) cos()

### Explanation:

The cos() function is used to calculate the cosine of a number.

## 13. What is the purpose of the PHP function floor()?

a) Rounds a number up to the nearest integer
b) Rounds a number down to the nearest integer
c) Rounds a number to a specified number of decimal points
d) Finds the floor value of a number

b) Rounds a number down to the nearest integer

### Explanation:

floor() rounds a number down to the next lowest integer.

## 14. Which PHP function is used to calculate the arc tangent of two variables?

a) atan()
b) atan2()
c) tan()
d) atanh()

b) atan2()

### Explanation:

atan2() function calculates the arc tangent of two variables y and x.

a) smallest()
b) min()
c) lower()
d) least()