如何使用codeigniter将多个csv文件导入mysql？

Question

我正在一个项目中工作，我需要将多个csv文件的数据上传到数据库中的单个表。 目前我已编写代码，我上传包含csv文件的zip文件并将其解压缩到临时文件夹中。但我无法编写代码来读取每个csv文件并将数据插入到mysql中。 请指导我。

这是我的控制器代码

public function upload() {
    $spcode = $this->input->post("spcode");
    $config['upload_path']  = './adsl/';
    $config['allowed_types'] = 'zip';
    $data['msg'] = '';
    $this->load->library('upload', $config);

    // If upload failed, display error
    if (!$this->upload->do_upload()) {
        $data['msg'] = $this->upload->display_errors();
    }
    $this->load->view('templates/header');
    $this->load->view('upload_wholesale', $data);
    $this->load->view('templates/footer');

}

public function fetchFilesFromDirectory() {
    $dir = "./adsl/";
    $filesArr = array_diff(scandir($dir), array('..', '.'));
    if(!empty($filesArr)) {
        $zip = new ZipArchive;
        foreach($filesArr as $fileName) {
            $file = "./adsl/".$fileName;
            chmod($file,0777);
            if ($zip->open($file) === TRUE) {
                $zip->extractTo('./wholesaleUploads/');
                $zip->close();
                $chunkFile = explode(".", $fileName);
                $extracted_files = directory_map("./wholesaleUploads/".$chunkFile[0]);
                chmod($extracted_files,0777);


                    if ($this->csvimport->get_array($extracted_files)) {
                        $csv_array = $this->csvimport->get_array($extracted_files);
                        //print_r($csv_array);
                        if(!empty($csv_array)) {
                             foreach ($csv_array as $row) {
                                $insert_data = array(
                                    'accountNumber'=>$row['AccountNumber'],
                                    'custId'=>$row['CustID'],
                                    'serviceNumber'=>$row['ServiceNumber'],
                                    'serviceType'=>$row['Service Type'],
                                    'chargeType'=>$row['ChargeType'],
                                    'details'=>$row['Details'],
                                    'dateFrom'=>$row['DateFrom'],
                                    'dateTo'=>$row['DateTo'],
                                    'charge'=>$row['Charge'],
                                    'gst'=>$row['GST'],
                                    'payment'=>$row['Payment'],
                                    'invoiceNumber'=>$row['InvoiceNumber'],
                                    'spcode'=>$spcode,
                                );

                                $this->upload_adsl->insert_csv($insert_data);
                            }
                        }
                            $this->upload_adsl->addFiles($chunkFile[0].".csv");
                            unlink($file); // Remove from Resource Directory.
                            unlink($extracted_files); // Remove from Upload Directory.
                            echo "File uploaded successfully.";
                    }

            }

        }
    }
}

}