Sum loops several arrays

Question

I don't know how I can get the sum

array(1) { 
    [0]=> array(1) { 
        ["Dato1"]=> string(6) "714084" 
    } 
    [1]=> array(1) { 
        ["Dato2"]=> string(6) "600397" 
    } 
}

 array(2) { 
    [0]=> array(1) { 
        ["Dato1"]=> string(6) "714084" 
    } 
    [1]=> array(1) { 
        ["Dato2"]=> string(6) "600397" 
    } 
}

The idea is:

sum: 25+125+95 = 245

sum: 32+52+57 = 141

<?php
$sum=0;

$suma =0;
$iterator = new MultipleIterator;
$iterator->attachIterator(new ArrayIterator($datoscaser));
$iterator->attachIterator(new ArrayIterator($datosmapfre));
$iterator->attachIterator(new ArrayIterator($datosbbva));

foreach ($iterator as $values) {

}

            ?>

I have tried to do this:

foreach ($iterator as $values) {
$suma=$sum+$values;
}

but it tells me that it is an array

Start with var_dump($values). It's an array like [25, 125, 95], right? How do you sum an array of values? array_sum. Now just add that to $sum… — deceze
– deceze ♦, Commented Oct 21, 2022 at 9:23
Does this answer your question? Summing of all elements in the sub array - PHP — mighty_dev
– mighty_dev, Commented Oct 21, 2022 at 9:34
This is the var_dump($values) array(3) { [0]=> array(1) { ["Dato1"]=> string(6) "714084" } [1]=> array(1) { ["Dato2"]=> string(6) "372741" } [2]=> array(1) { ["Dato3"]=> string(6) "195867" } } array(3) { [0]=> array(1) { ["Dato1"]=> string(6) "600397" } [1]=> array(1) { ["Dato2"]=> string(6) "-37872" } [2]=> array(1) { ["Dato3"]=> string(5) "97276" } } — Rubius
– Rubius, Commented Oct 21, 2022 at 9:35
foreach ($iterator as $values) { $sum += array_sum($values); } echo $sum; The result $sum is "0" — Rubius
– Rubius, Commented Oct 21, 2022 at 9:37

Yohann Daniel Carter · Accepted Answer · 2022-10-21 10:23:06Z

2

you can use :

$a = [
    ["Dato1"=> "714084"],
    ["Dato2"=> "600397"]
];

function sum($carry, $item)
{
    return $carry += array_values($item)[0];
}

var_dump(array_reduce($a, "sum"));

if you want something more flexible :

<?php

$a = [
    ["Dato1"=> "714084"],
    ["Dato2"=> "600397"],
    14
];


$total = 0;

//Does not persist
array_walk_recursive( $a, function($value, $key) use (&$total) {
    return $total += (int)$value;
}, $total);

echo $total;

edited Oct 21, 2022 at 10:23

answered Oct 21, 2022 at 9:46

Yohann Daniel Carter

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3 Comments

Rubius Over a year ago

for $iterator tell me: Found 'MultipleIterator'

Yohann Daniel Carter Over a year ago

You don't need to use MultipleIterator use PHP native function

Rubius Over a year ago

But I don't understand how to insert that in what I need, because I have to go through the three arrays and add each of them separately

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