$answer = new Answer();
    $answer->get_from_db($question_answer_id);
    $cell = divideBy26($columnId) . $row_id;
    $cell_value = $answer->getValue();
    // Add some data
    $objPHPExcel->setActiveSheetIndex($sheetId)->setCellValue($cell, $cell_value);
    $objPHPExcel->getActiveSheet()->getColumnDimension(divideBy26($columnId))->setWidth(15);
    $objPHPExcel->getActiveSheet()->getStyle($cell)->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_LEFT);
    $columnId++;
}
// list users by question
$row_id = 3;
foreach ($voted_users as $voted_user_id) {
    $user = new UserFunctions();
    $user->get_from_db($voted_user_id);
    if ($user->getGender() == 1) {
        $cell = 'A' . $row_id;
        $user_number = $row_id - 2;
        $cell_value = 'User' . $user_number;
        // Add some data
        $objPHPExcel->setActiveSheetIndex($sheetId)->setCellValue($cell, $cell_value);
        // list votes by user
        $columnId = 2;
        foreach ($question_answers as $question_answer_id) {
            $vote = new Vote();
            $vote_id_array = $vote->get_by_user_and_answer($voted_user_id, $question_answer_id);
            $cell_value = "";
            $answer = new Answer();
            $answer->get_from_db($question_answer_id);
            if (!empty($vote_id_array)) {
                $vote_id = $vote_id_array[0];