Concatenate values according to the same key value

Im some new in PHP and I want to join values according to drug key with the same id.

My array:

Array
(
    [0] => Array
        (
            [id] => 17
            [drug] => Clobazam
        )

    [1] => Array
        (
            [id] => 23
            [drug] => Dexametasona
        )

    [2] => Array
        (
            [id] => 23
            [drug] => Diiodohidroxiquinoleína
        )

    [3] => Array
        (
            [id] => 25
            [drug] => Diclofenac,dietilamina
        )

Expected output:

Array
(
    [0] => Array
        (
            [id] => 17
            [drug] => Clobazam
        )

    [1] => Array
        (
            [id] => 23
            [drug] => Dexametasona, Diiodohidroxiquinoleína
        )

    [2] => Array
        (
            [id] => 25
            [drug] => Diclofenac,dietilamina
        )

Answer

$array = [
    [
        'id' => 17,
        'drug' => 'Clobazam'
    ],
    [
        'id' => 23,
        'drug' => 'Dexametasona'
    ],
    [
        'id' => 23,
        'drug' => 'Diiodohidroxiquinoleína'
    ],
    [
        'id' => 25,
        'drug' => 'Clobazam'
    ]
];

$result = [];

foreach ($array as $item) {
    $id = $item['id'];
    $drug = $item['drug'];
    if (isset($result[$id])) {
        $result[$id]['drug'] .= ', ' . $drug;
    } else {
        $result[$id] = $item;
    }
}

$result = array_values($result);

var_dump($result);