How to sum duplicate array values?

Question

PHP

$vk_stats = json_decode(file_get_contents('https://api.vk.com/method/stats.get?group_id='.$_GET['id'].'&stats_groups=reach&interval=day&intervals_count=14&extended=0&access_token='.$token.'&v='.$v), true);
 foreach ($vk_stats['response'] as $vk_stats_res) {



    $summ+= $vk_stats_res['reach'];
    echo $summ;

}

how to get sum of ["reach"] values

Answer 1

If you output one array (arr), where is the totality of these arrays (item), then something like this:

$summ = 0;
foreach ($arr as $item) {
    $summ+= $item['reach'];
}