php - 如何对多维数组中的特定键进行求和和计数

Question

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Answer 1

使用$sum作为数组并得到正确的多数组值:

$sum = array(
       'clicks' => 0,
       'views' => 0
       );

foreach ($data as $id => $value) {
    $sum['clicks'] += $value['clicks'];
    $sum['views'] += $value['views'];
}

dd($sum);