How to Add All of My Array Values Together in PHP

How can I add all of my array values together in PHP?

If your array consists of numbers, you can use array_sum to calculate a total. Example from the manual:

$a = array(2, 4, 6, 8);
echo "sum(a) = " . array_sum($a) . "\n";

If your array consists of strings, you can use implode:

implode(",", $array);

it would turn an array like this:

strawberries
peaches
pears
apples

into a string like this:

strawberries,peaches,pears,apples

Sum all values from a php array

array_sum() will do the job for you.

This function returns sum of all array elements integer or float.

How to sum values from multiple arrays and add to new array with conditions?

Try to sum using the the sector value like this way :

$res = array();
foreach($data as $key=> $value){
  $res[$value['SECTOR']] += $value['MCAP'];
}

var_dump($res); // this output the expected result you want

php - how to add all the numbers in an array

If you just need to sum up total, use sum() Query Builder method:

$result = DB::table('marks')->where([
    ['term', $request->term],
    ['subject', $request->subject],
    ['class', $student->class],
    ['arm', $student->arm],
])->sum('total');

Php - Sum up the numbers in an array one by one

The simplest way is just to loop over the values, adding the current array value to the previous output value to create the new output value. You can then convert that into an array of [x => y] values using array_combine:

$arr=array(1100,3150,4430,4430,5170,7450,7450,7450,8230);
$out = array($arr[0]);
for ($i = 1; $i < count($arr); $i++) {
    $out[$i] = $out[$i-1] + $arr[$i];
}
$arr = array_combine($out, $arr);
print_r($arr);

Output:

Array (
  [1100] => 1100
  [4250] => 3150
  [8680] => 4430
  [13110] => 4430
  [18280] => 5170
  [25730] => 7450
  [33180] => 7450
  [40630] => 7450
  [48860] => 8230
)

Demo on 3v4l.org

How to sum all column values in multi-dimensional array?

$sumArray = array();

foreach ($myArray as $k=>$subArray) {
  foreach ($subArray as $id=>$value) {
    $sumArray[$id]+=$value;
  }
}

print_r($sumArray);

php, sum two array values

You can use array_keys to get the unique from both of the array and then loop through keys to some them

$r = [];
$keys = array_keys($a1+$a2);
foreach($keys as $v){
  $r[$v] = (empty($a1[$v]) ? 0 : $a1[$v]) + (empty($a2[$v]) ? 0 : $a2[$v]);
}

Working DEMO

Sum parts of an array in php

The simplest, most efficient way to group and sum is to perform a single loop and assign temporary associative keys.

When a row is identified as a new dlv_id row, save the two desired elements, otherwise add the no_of_subs value to the pre-existing value.

Optionally, remove the temporary keys with array_values().

Code (Demo)

$array = [
    ["cust_id" => 1006, "no_of_subs" => 2, "dlv_id" => 1000],
    ["cust_id" => 1011, "no_of_subs" => 3, "dlv_id" => 1000],
    ["cust_id" => 1012, "no_of_subs" => 5, "dlv_id" => 1001],
    ["cust_id" => 1013, "no_of_subs" => 6, "dlv_id" => 1001]
];

foreach ($array as $row) {
    if (!isset($result[$row["dlv_id"]])) {
        $result[$row["dlv_id"]] = ["dlv_id" => $row["dlv_id"], "no_of_subs" => $row["no_of_subs"]];
    } else {
        $result[$row["dlv_id"]]["no_of_subs"] += $row["no_of_subs"];
    }
}
var_export(array_values($result));

Output:

array (
  0 => 
  array (
    'dlv_id' => 1000,
    'no_of_subs' => 5,
  ),
  1 => 
  array (
    'dlv_id' => 1001,
    'no_of_subs' => 11,
  ),
)

How merge and sum values by comparing any one or two values of the same array

Because all your nested arrays are with predefined amount of elements, all of those with the same indexes, you can use a for loop instead of the third foreach:

$sum = [];
foreach($weekly as $aSet)
{
    foreach($aSet as $k => $kv)
    {
        $sum[$kv[0]][0] = $kv[0];
        $sum[$kv[0]][1] = $kv[1];
        for($i = 2; $i <= 3; $i++)
        {
            $sum[$kv[0]][$i] += $kv[$i];
        }
    }
}
echo "<pre>";
print_r($sum);
echo "</pre>";

With a for loop you can cycle inside the array considering only the needed elements of that array (in your case the indexes 0 and 1 aren't useful in this loop).

Output:

Array
(
    [Week - 1] => Array
        (
            [0] => Week - 1
            [1] => 2019-08-05
            [2] => 8
            [3] => 10
        )

    [Week - 2] => Array
        (
            [0] => Week - 2
            [1] => 2019-08-12
            [2] => 12
            [3] => 14
        )

    [Week - 3] => Array
        (
            [0] => Week - 3
            [1] => 2019-08-19
            [2] => 16
            [3] => 18
        )

    [Week - 4] => Array
        (
            [0] => Week - 4
            [1] => 2019-08-26
            [2] => 13
            [3] => 14
        )

)

If you prefer the array with numbered indexes do that:

echo "<pre>";
print_r(array_values($sum));
echo "</pre>";

Output:

Array
(
    [0] => Array
        (
            [0] => Week - 1
            [1] => 2019-08-05
            [2] => 8
            [3] => 10
        )

    [1] => Array
        (
            [0] => Week - 2
            [1] => 2019-08-12
            [2] => 12
            [3] => 14
        )

    [2] => Array
        (
            [0] => Week - 3
            [1] => 2019-08-19
            [2] => 16
            [3] => 18
        )

    [3] => Array
        (
            [0] => Week - 4
            [1] => 2019-08-26
            [2] => 13
            [3] => 14
        )

)

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