Would it be okay to understand arrays as integer indexed keys? For example, wouldn't that mean something like: array = [ [1,2], ["a", "b"] ] Be the same as

Would it be okay to understand arrays as integer indexed keys? For example, wouldn't that mean something like: array = [ [1,2], ["a", "b"] ] Be the same as this: [array] 0 = [1,2] 1 = ["a", "b"]