Make and zip a csv file from an array then send it by email

makecsv.php

public function makeCSV($data, $group) {
        $file_name = storage_path('app/tmp/' . uniqid($group . '_') . '.csv');;
        $file = fopen($file_name, 'w');
        $headers = array_keys(reset($data));
        fputcsv($file, $headers);
        foreach ($data as $fields) {
            fputcsv($file, $fields);
        }
        fclose($file);
        $gz_file = $file_name . '.gz';
        $gz = gzopen($gz_file, 'w9');
        gzwrite($gz, file_get_contents($file_name));
        gzclose($gz);
        unlink($file_name);
        return $gz_file;
    }

$file_name = $this->makeCSV($data, $group);
         $message = 'Sent by X';
                Mail::raw($message, function ($message) use ($file_name) {
                    $message->subject('Subject')
                        ->attach($file_name)
                        ->to(['email@domain.com']);
                });