Calculate the sum of elements in a quantity field / PHP?

Question

PHP

You need to create a function called countBasket, with one parameter - an array of positions in the basket.

The function should calculate and return how many items are in the cart (there can be several items in one item of the cart - the quantity field).

An array of the following structure will be passed to your function:

$basket = [
    [
        'position' => 'Book',
        'quantity' => 1,
    ],
    [
        'position' => 'Mouse',
        'quantity' => 12,
    ],
 ]

Answer 1

array_sum(array_column($basket, 'quantity'))

Answer 2

Count number of elements in PHP array

Come on.
sizeof(Array)