Question

here is my array

[Computers] => Array
(
   [0] => Array
       (
           [product_id] => 78
           [price] => 999.99
           [quantity] => 2
       )

   [1] => Array
       (
           [product_id] => 70
           [price] => 49.99
           [quantity] => 6
       )

)


[Scanners] => Array
(
   [0] => Array
       (
           [product_id] => 65
           [price] => 99.99
           [quantity] => 7
       )
   [1] => Array
       (
           [product_id] => 70
           [price] => 149.99
           [quantity] => 5
       )
   [2] => Array
       (
           [product_id] => 70
           [price] => 10.99
           [quantity] => 1
       )

)

I was looking for a way to total up the values of the outer arrays based on the inner arrays

so for example the Computers array has two products and i need to get the totals based on quantity. So for example (999.99 *2) + (49.99 * 6) = 2299.92 for the computer array and so on…

Answer 1

Here is a solution which is untested, but I don´t see why it shouldn´t work

$sum = 0;
foreach($array as $key => $value) {
    $sum += $value['quantity'] * $value['price'];
}