Different datatype values in an array

Question

Why php array allows different datatype to reside in an array as array should contains data of same datatype but that is not the case with php?

For example: - We can add ints, strings, floats, all of these in a single array.

Answer 1

An array in PHP is actually an ordered map. A map is a type that associates values to keys. This type is optimized for several different uses; it can be treated as an array, list (vector), hash table (an implementation of a map), dictionary, collection, stack, queue, and probably more. As array values can be other arrays, trees and multidimensional arrays are also possible.