Symfony2 -从字符串生成csv并强制下载文件

use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpFoundation\ResponseHeaderBag;
use Symfony\Component\HttpFoundation\StreamedResponse;
use Symfony\Component\HttpFoundation\BinaryFileResponse;
use Symfony\Component\HttpFoundation\File\Stream;

// ...

public function generateCsvAction()
{
    // 生成CSV文件内容
    $csvContent = "Name,Email\nJohn Doe,johndoe@example.com\nJane Smith,janesmith@example.com";

    // 设置文件名和路径
    $filename = 'data.csv';
    $filepath = '/path/to/save/' . $filename;

    // 将CSV内容写入文件
    file_put_contents($filepath, $csvContent);

    // 强制下载文件
    $response = new BinaryFileResponse($filepath);
    $response->setContentDisposition(
        ResponseHeaderBag::DISPOSITION_ATTACHMENT,
        $filename
    );

    return $response;
}