Import, Export TSV Lavavel

I am working to import, export TSV in Laravel but no solution. Please help me, thanks. I trying $headers = [ 'Cache-Control' => 'must-revalidate, post-check=0, pre-check=0' , 'Content-type' => 'text/tab-separated-values' , 'Content-Disposition' => 'attachment; filename=category.tsv' , 'Expires' => '0' , 'Pragma' => 'public' ]; array_unshift($result, array_keys($result[0]));

    $callback = function() use ($result)
    {
        $FH = fopen('php://output', 'w');
        foreach ($result as $row) {
            fputcsv($FH, $row);
        }
        fclose($FH);
    };

    return \Response::stream($callback, 200, $headers);

via Chebli Mohamed