~~~
function dump($data) {
echo "<pre>";
print_r($data);
echo "</pre>";
die();
}
$arr = [
[
'price' => 10.5,
'sales' => 10,
'sales2' => 150,
'brand' => 'brand1'
],
[
'price' => 11.5,
'sales' => 20,
'sales2' => 200,
'brand' => 'brand1'
],
[
'price' => 30.5,
'sales' => 30,
'sales2' => 200,
'brand' => 'brand2'
],
[
'price' => 40.5,
'sales' => 40,
'sales2' => 400,
'brand' => 'brand3'
],
[
'price' => 50.5,
'sales' => 50,
'sales2' => 500,
'brand' => 'brand4'
],
];
$new_arr = [];
foreach ($arr as $key => $value) {
if(isset($new_arr[$value['brand']])) {
$new_arr[$value['brand']] += $value['sales2'];
} else {
$new_arr[$value['brand']] = $value['sales2'];
}
}
arsort($new_arr);
dump($new_arr);
~~~
