How to sum the numbers of two arrays - php

Question

This is probably not so hard, but I have searched for a while with no luck so any help will be appreciated.
I'm working in PHP with two arrays which contain a number of multidimensional arrays each with a set of two values. The 2 arrays looks something like this:
Array
(
[0] => Array
(
[0] => 3206.63
[1] => 815.47
)
[1] => Array
(
[0] => 5024.71
[1] => 803.73
)
[2] => Array
(
[0] => 3290.36
[1] => 625.02
)
//...
)
Array
(
[0] => Array
(
[0] => 3138.87
[1] => 819.8
)
[1] => Array
(
[0] => 5000.24
[1] => 810.87
)
[2] => Array
(
[0] => 3221.15
[1] => 668.58
)
//...
)
And I need to achieve this:
Array
(
[0] => Array
(
[0] => 6345.5
[1] => 1635.27
)
[1] => Array
(
[0] => 10024.95
[1] => 1614.6
)
[2] => Array
(
[0] => 6511.51
[1] => 1293.6
)
//...
)

Answer 1

This should work for you:
(Here i loop though each innerArray with foreach and use array_sum() to get the sum of all values of each innerArray)
<?php
$arr = array(
array(
3206.63,
815.47
),
array(
5024.71,
803.73
),
array(
3290.36,
625.02
)
);
$result = array();
foreach($arr as $v)
$result[] = array_sum($v);
print_r($result);
?>
Output:
Array ( [0] => 4022.1 [1] => 5828.44 [2] => 3915.38 )
If you have 2 Arrays you can use this:
$result = array();
foreach($arr1 as $k => $v)
$result[] = array_sum($arr1[$k]) + array_sum($arr2[$k]);
print_r($result);
EDIT:
From your updated question, this should work for you:
<?php
$arr1 = array(
array(
3206.63,
815.47
),
array(
5024.71,
803.73
),
array(
3290.36,
625.02
)
);
$arr2 = array(
array(
3138.87,
819.8
),
array(
5000.24,
810.87
),
array(
3221.15,
668.58
)
);
$sums = array();
foreach ($arr1 as $key => $value) {
$sums[$key][] = $arr1[$key][0] + $arr2[$key][0];
$sums[$key][] = $arr1[$key][1] + $arr2[$key][1];
}
print_r($sums);
?>
Output:
Array
(
[0] => Array
(
[0] => 6345.5
[1] => 1635.27
)
[1] => Array
(
[0] => 10024.95
[1] => 1614.6
)
[2] => Array
(
[0] => 6511.51
[1] => 1293.6
)
)