取消设置每个数组对象的变量

Question

I'd like to know if there is any way to simplify this:

$transactions = $database->fetchAll("SELECT * FROM transactions WHERE user = :user", array(":user" => $USER["id"]));
$transactions_cleaned = array();

foreach($transactions as $transaction){
    unset($transaction["id"]);
    unset($transaction["user"]);

    array_push($transactions_cleaned, $transaction);
}

It basically removes each id and user variables for each object of the following array:

Array
(
    [0] => Array
        (
            [id] => 1
            [user] => 1
            [type] => deposit
            [amount] => 1000
        )
    [1] => Array
        (
            [id] => 2
            [user] => 1
            [type] => withdraw
            [amount] => 1000
        )
)

So it becomes like this:

Array
(
    [0] => Array
        (
            [type] => deposit
            [amount] => 1000
        )
    [1] => Array
        (
            [type] => withdraw
            [amount] => 1000
        )
)

Answer 1

Thanks to mfort and also Sagar Sainkar even if yours is more complex:

$transactions = $database->fetchAll("SELECT * FROM transactions WHERE user = :user", array(":user" => $USER["id"]));

foreach($transactions as &$transaction){
    unset($transaction["id"]);
    unset($transaction["user"]);
}