Sum values in multidimensional array?

Question

I just have no idea how to sum and echo values in multidimensional array. This is my array with info about order.

I need to sum RESULT_VALUE and echo one united DESCR list. I have tried lots of things but nothing, never worked with that kind of arrays levels. This is an array with two different products with applied discounts.

_I have tried lots of things but nothing, never worked_ Did you? There are numerous similar questions here on SO: [question 1](https://stackoverflow.com/questions/27053492/sum-the-values-of-two-associative-multi-dimensional-arrays-in-php), [question 2](https://stackoverflow.com/questions/16138395/sum-values-of-multidimensional-array-by-key-without-loop), [question 3](https://stackoverflow.com/questions/5821948/in-php-find-duplicate-entry-in-a-multi-dimensional-array-then-sum-the-values-in) — KarelG, Feb 01 '18 at 12:21
What do you mean with *echo one united DESCR list* there is no key in the array with only "DESCR" or "DESCR list" — Andreas, Feb 01 '18 at 12:23
@Andreas, I mean I need to echo cell with key DESCR and it should look like this:

splash58 · Accepted Answer · 2018-02-01T15:59:29.293

1

You can use array_walk_recursive to get result. Code below sum all values of key $key wherever they are in the array

$key = 'RESULT_VALUE';
$sum = 0;
array_walk_recursive ($array, 
         function($v, $k, $key) use (&$sum) { 
             if($k === $key) { $sum += $v;}}, 
         $key);

echo $sum;

edited Feb 01 '18 at 15:59

answered Feb 01 '18 at 13:51

splash58

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Thanks, its worked not corretly, for example I made this to watch values. `$key = 'RESULT_VALUE'; $sum = 0; array_walk_recursive ($res[ORDER][0], function($v, $k, $key) use (&$sum) { if($k == $key) { echo $k."-".$v."
";}}, $key); echo $sum; echo "
";` And what we got: _00-0 RESULT_VALUE-229.905 0-discount 10% (229.91 rub.) 0-0 RESULT_VALUE-70.796 0-discount 10% (70.80 rub.) 0_ – Hazzy Feb 01 '18 at 14:53
Oh, it works when I change a conditions, for example if($k == $key && $k !== 0), why condition in your answer is includes a cells with 0 key? – Hazzy Feb 01 '18 at 15:09
Because php cast string to zero when comparing with int - write f($k === $key – splash58 Feb 01 '18 at 15:45

score -1 · Answer 2 · edited Feb 01 '18 at 12:37

-1

You can use array_sum and array_column.

Array_column grabs all values from one column in the array, and array_sum... Sums it...

echo array_sum(array_column($arr, "RESULT_VALUE"));

edited Feb 01 '18 at 12:37

Kasia Gogolek

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answered Feb 01 '18 at 12:20

Andreas

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Error invert array_column parameters – François MARTIN-BROSSAT Feb 01 '18 at 12:23
Thanks! I'll fix it. – Andreas Feb 01 '18 at 12:24
@Hazzy, I assumed you would change `$arr` to your array name. Did you do that? – Andreas Feb 01 '18 at 12:53
@Andreas, of course, `echo array_sum(array_column($res, "RESULT_VALUE")); print_r(array_column($res["ORDER"], "DESCR"));` Array is empty too. – Hazzy Feb 01 '18 at 13:00

score -1 · Answer 3 · answered Feb 01 '18 at 12:22

-1

Echo array_sum(array_column($array, 'RESULT_VALUE'));

This solution work ?

answered Feb 01 '18 at 12:22

François MARTIN-BROSSAT

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Sum values in multidimensional array?

3 Answers3