$letters = array(array("a","b")); echo (count($letters,1));

Question

What is the output and how?

Answer 1

Quoting from https://www.php.net/manual/en/function.count.php

"mode
If the optional mode parameter is set to COUNT_RECURSIVE (or 1), count() will recursively count the array. This is particularly useful for counting all the elements of a multidimensional array."

For the array in your example, you will get 3 from count() because the inner array plus its 2 elements are counted in.

Answer 2

Thnku so much