mysql - クエリ結果にループを設定してtwigファイルに渡す方法は?

Question

PHP の変数にデータを入力するための for ループを追加したいので、クエリ結果の行を取得します。ループを適用してクエリ結果の行数を dql で取得する方法は?

これが私のコードです：

public function invoicepreviewAction(){
    if(isset($_SESSION['invoiceid'])) {
        $invoiceid=$_SESSION['invoiceid'];
    }
    if(isset($_SESSION['date'])) {
        $dateofinvoice=$_SESSION['date'];
    }
    $em = $this->getDoctrine()->getManager();
    $query = $em->createQuery("select a.companyName,a.companyAddress,a.companyPobox,a.companyCity,a.companyCountry,c.firstName,c.lastName,c.address,c.city,c.country,c.phoneNumber,i.notes from InvoicesInvoicesBundle:Invoices i,ClientsClientsBundle:Clients c,AccountsAccountsBundle:Accounts a where i.id='".$invoiceid."' and i.accountID=a.id and i.clientID=c.id");
    $invoices = $query->getResult();
    $companyname=$invoices[0]['companyName'];
    $comanyaddress=$invoices[0]['companyAddress'];
    $companypobox=$invoices[0]['companyPobox'];
    $companycity=$invoices[0]['companyCity'];
    $companycountry=$invoices[0]['companyCountry'];
    $firstname=$invoices[0]['firstName'];
    $lastname=$invoices[0]['lastName'];
    $address=$invoices[0]['address'];
    $city=$invoices[0]['city'];
    $country=$invoices[0]['country'];
    $notes=$invoices[0]['notes'];
    $phonenumber=$invoices[0]['phoneNumber'];
    $date=$dateofinvoice;
    return $this->render('InvoicesInvoicesBundle:Invoices:invoicepreview.html.twig', array(
    'companyname' =>$companyname,
    'companyaddress' => $comanyaddress,
    'companypobox' => $companypobox,
    'companycity' => $companycity,
    'companycountry' =>$companycountry,
    'firstname' => $firstname,
    'lastname' => $lastname,
    'address' => $address,
    'city' => $city,
    'country' => $country,
    'notes' => $notes,
    'phonenumber' => $phonenumber,
    'date' => $date,            
    ));
}