Php, calculate percentage on multiple items

Question

I have 5 items in total, and I would like to calculate percentage based on [data] filed. The result will be used for pie chart.

Array
(
    [0] => Array
          


        

Answer 1

Simple With loop method to do

$arr = array
(
0 => array
    (
        "label" => "Item1",
        "data" => 849,
    ),

1 => array
    (
        "label" => "Item2",
        "data" => 657,
    ),

2 => array
    (
        "label" => "Item3",
        "data" => 571,
    ),

3 => array
    (
        "label" => "Item4",
        "data" => 538,
    ),

4 => array
    (
        "label" => "Item5",
        "data" => 446,
    ),

);

$totalElement = count($arr);
$data = 0;
foreach ($arr as $key => $value) {
    $data += $value['data'];
}

echo ($totalElement/$data)*100;

result

 0.16334531198955