How to write multiple lines to csv file?

Question

PHP

for ($k=1; $k <= 2; $k++) { 
    $res = $curl->get('');
    foreach ($products as $product) {
                 


                $list = array(
        'Строка для заголовков столбцов',
        'Делаю строку используя добытые данные\переменные для записи'
      );

      $fp = fopen('import.csv', 'w');

      foreach ($list as $line) {
        fputcsv($fp, explode(',', $line), ";");
      }
      
      fclose($fp);
}
}

This is the construction I use to parse goods.
Inside the foreach is all the data.
And inside the foreach I write the data to the file, but only one line is written, but 14 are needed (Because there are 14 products) How can I make sure that all lines are written?