Question

is it possible to have a negative value in step ?​

Answer 1

it depend on topic and solution according to that chapter✌✌

Answer 2

Answer:

This is taken from the  manual for _decode(), Example 4, 5th line from the bottom there:

(range(4, 3, -1) as $depth)

I am not sure what is the purpose of that -1 there. I tried range(4, 3, 1) and range (4, 3, -1) and it gives the same results. The 1 in the first example is the default so it could be range(4, 3). I was only trying it with something like print_r(range(4, 3, -1) . I was looking on the Net and there is no info about it, or not right away.