PDO, Select a query with some fields, of a certain user and code

I need to set up a query where I will only have 5 fields ( STATUS , ID_USUARIO , PACKED , ID_TRANSACAO and ENTREGUE ).

I need when I change from STATUS change in another table, and update in the current field the ENTREGUE from "N" to "S" and do not carry out any query in the one that is already delivered.

At the same time, I need the PACKED to identify how much the amount will be delivered because it is being ID, that is, id 1 corresponds to 30 Chips ...

Below my status code; I have no idea how to make this logic work.

 <?php

require_once("core/config/config.php");

if (isset($_POST['notificationType']) && $_POST['notificationType'] == 'transaction') {

    //CÓDIGO DA NOTIFICAÇÃO
    $code = $_POST['notificationCode'];

    //MONTAMOS A URL PARA PEGAR O STATUS
    $url = 'https://ws.sandbox.pagseguro.uol.com.br/v2/transactions/notifications/' . $code . '?email=' . $email . '&token=' . $token;

    //PEGAMOS O STATUS VIA CURL
    $curl = curl_init($url);
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);

    $transaction= curl_exec($curl);
    curl_close($curl);

    //SE DER ALGUM ERRO NO NOSSO CURL VAI VIM COMO Unauthorized
    if($transaction == 'Unauthorized'){


        exit;//Mantenha essa linha
    }

    $pdo = conectaDB();
                    $get = $pdo->prepare("SELECT * FROM pagseguro");
                    $get->execute();

                    $query = $get->fetchAll(PDO::FETCH_ASSOC);

                    foreach ($query as $row) {
                            $user =   $row['id_user'];
                            $codigo_transacao = $row['id_transacao'];
                            $codigo = $row['packed'];
                    }


    $entregue = 'S';

    switch ($query->$codigo) {
        case '1':
            $chips = '30.00';
            break;

        case '2':
            $chips = '50.00';
            break;

        case '3':
            $chips = '100.00';
            break;

        case '4':
            $chips = '250.00';
            break;
        }


    //COMVERTE O RERTORNO EM STRING
    $transaction = simplexml_load_string($transaction);       

    /*
     * STATUS RETORNO         
     * 1 - Aguardando pagamento
     * 2 - Em análise
     * 3 - Paga
     * 4 - Disponível
     * 5 - Em disputa
     * 6 - Devolvida
     * 7 - Cancelada
     */ 

    //PEGAMOS O CÓDIGO DO STATUS
    switch ($transaction->status) {
        case '1':
            $status = 'Aguardando pagamento';
            break;

        case '2':
            $status = 'Em análise';
            break;

        case '3':
            $status = 'Paga';
            $edit2   = $pdo->prepare("UPDATE pagseguro SET entregue=:entregue WHERE id_transacao=:id_transacao");
            $edit2->bindValue(':entregue', $entregue);           
            $edit2->bindValue(':id_transacao', $transaction->code);
            $edit2->execute();

           // SECOND CASE
            $update   = $pdo->prepare("UPDATE users SET credits=:credits WHERE username=:user_pagseguro");
            $update->bindValue(':credits', $chips);           
            $update->bindValue(':user_pagseguro', $user);
            $update->execute();
            break;

        case '4':
            $status = 'Disponível';
            break;

        case '5':
            $status = 'Em disputa';
            break;

        case '6':
            $status = 'Devolvida';
            break;

        case '7':
            $status = 'Cancelada';
            break;                      
    }


    //ATUALIZAMOS O STATUS NO BANCO DADOS.
    $pdo    = conectaDB();
    $edit   = $pdo->prepare("UPDATE pagseguro SET status=:status WHERE id_transacao=:id_transacao");
    $edit->bindValue(':status', $status);           
    $edit->bindValue(':id_transacao', $transaction->code);

    $edit->execute();                       
}
?>