Sum a column's values in a 2d array

Question

I have a 2d array like this:

[
    ['name' => 'Banana', 'quantity' => 124],
    ['name' => 'Cherry', 'quantity' => 24],
    ['name' => 'Apple', 'quantity' => 224],
]

How can I sum the numbers with the key quantity? (372)

Answer 1

Please, always share with us what you have tried.

It help us a lot.

You can use:

$arr = [['name' => "Banana", 'quantity' => 124], ['name' => "Cherry", 'quantity' => 24], ['name' => "Apple", 'quantity' => 224]];

$sum = 0;
foreach ($arr as $item) {
    $sum += $item['quantity'];
}

Or (PHP 5.5+):

$sum = array_sum(array_column($arr, 'quantity'));