Question

Which one of the following functions is used to determine whether a class exists?

(a) exist()

(b) exist_class()

(c) class_exist()

(d) __exist()

This question was addressed to me by my college professor while I was bunking the class.

My enquiry is from Basics of Object-Oriented PHP- 2 in chapter Object-Oriented PHP of PHP

Answer 1

Right choice is (c) class_exist()

To elaborate: The class_exist() function returns true or false according to whether the class exists within the currently executing script content.