PHP array reorganize with unique count - php

Question

I have following array which has ID as index, and some count as value. Ultimate goal is to get total of unique IDs in another array.
Array
(
[0] => Array
(
[0] => Team Object
(
[id] => 1
[countStat] => 25
)
)
[1] => Array
(
[0] => Team Object
(
[id] => 2
[countStat] => 24
)
)
[2] => Array
(
[0] => Team Object
(
[id] => 1
[countStat] => 23
)
)
[3] => Array
(
[0] => Team Object
(
[id] => 3
[countStat] => 23
)
)
[4] => Array
(
[0] => Team Object
(
[id] => 5
[countStat] => 21
)
)
[5] => Array
(
[0] => Team Object
(
[id] => 3
[countStat] => 21
)
)
[6] => Array
(
[0] => Team Object
(
[id] => 5
[countStat] => 20
)
)
[7] => Array
(
[0] => Team Object
(
[id] => 2
[countStat] => 20
)
)
)
I want result like below.
Array
(
[0] => Array
(
[0] => Team Object
(
[id] => 1
[countStat] => 48
)
)
[1] => Array
(
[0] => Team Object
(
[id] => 2
[countStat] => 44
)
)
[3] => Array
(
[0] => Team Object
(
[id] => 3
[countStat] => 44
)
)
[4] => Array
(
[0] => Team Object
(
[id] => 5
[countStat] => 41
)
)
)
I has spend few hours working on it but couldn't get solution. Can someone please help ?
Thank you.

Answer 1

Looks like you want to sum team object's countStats for like ids.
I've created a similar data structure, looped through it to form a temporary array that uses the id as a key, with associated amounts (to later sum - mine is amount, yours is countStats).
Then sum those and recreate desired output.
<?php
class Team
{
public $id;
public $amount;
public function __construct($id, $amount)
{
$this->id = $id;
$this->amount = $amount;
}
}
$input =
[
[new Team(1, 3)],
[new Team(1, 4)],
[new Team(2, 5)],
[new Team(2, 7)]
];
foreach($input as $subarray)
$amounts[$subarray[0]->id][]=$subarray[0]->amount;
print_r($amounts);
foreach($amounts as $k => $v)
$result[] = [new Team($k, array_sum($v))];
print_r($result);
Output:
Array
(
[1] => Array
(
[0] => 3
[1] => 4
)
[2] => Array
(
[0] => 5
[1] => 7
)
)
Array
(
[0] => Array
(
[0] => Team Object
(
[id] => 1
[amount] => 7
)
)
[1] => Array
(
[0] => Team Object
(
[id] => 2
[amount] => 12
)
)
)