CSV导出类

use Hyperf\HttpMessage\Stream\SwooleStream;
use Hyperf\HttpServer\Response;

class ExportLogic
{
    public static function export(array $head, array $body, string $file_name)
    {
        $head_keys   = array_keys($head);
        $head_values = array_values($head);
        $fileData    = self::utfToGbk(implode(',', $head_values)) . "\n";

        if (strpos($file_name, '.') === false) {
            $file_name .= '.csv';
        }

        foreach ($body as $value) {
            $temp_arr = [];
            foreach ($head_keys as $key) {
                $temp_arr[] = $value[$key] ?? '';
            }
            $fileData .= self::utfToGbk(implode(',', $temp_arr)) . "\n";
        }

        $response     = new Response();
        $content_type = 'text/csv';
        return $response->withHeader('content-description', 'File Transfer')
            ->withHeader('content-type', $content_type)
            ->withHeader('content-disposition', "attachment; filename={$file_name}")
            ->withHeader('content-transfer-encoding', 'binary')
            ->withHeader('pragma', 'public')
            ->withBody(new SwooleStream($fileData));
    }

    /**
     * 字符转换（utf-8 => GBK）
     * @param $data
     * @return false|string
     */
    public static function utfToGbk($data)
    {
        return mb_convert_encoding($data, "GBK", "UTF-8");
    }
}

在控制器中调用

    public function export()
    {
        $start = $this->request->input('start_day', Carbon::now()->subWeek()->startOfWeek()->toDateString());
        $end   = $this->request->input('end_day', Carbon::now()->subWeek()->endOfWeek()->toDateString());
        $list  = $this->getDepartmentRank($start, $end);

        $fileName = '部门排行榜' . $start . '-' . $end;

        return ExportLogic::export([
            "rank"            => '排名',
            "department_name" => '归属部门',
            "total_score"     => '质检得分',
            "level"           => '评价等级',
        ], $list, $fileName);
    }