Question

Which of the following PHP function will return true if a variable is an array or false if it is not an array?

(a) this_array()

(b) is_array()

(c) do_array()

(d) in_array()

The question was posed to me at a job interview.

This intriguing question comes from Arrays-1 in section Arrays and Functions of PHP

Answer 1

Right answer is (b) is_array()

To elaborate: The function is_array() is an inbuilt function in PHP which is used to check whether a variable is an array or not. Its prototype follows: boolean is_array(mixed variable).