Codeigniter -上传图片后将批次插入数据库

// 控制器方法
public function upload_image()
{
    // 加载上传库和数据库库
    $this->load->library('upload');
    $this->load->database();

    // 配置上传图片的相关设置
    $config['upload_path'] = './uploads/';
    $config['allowed_types'] = 'gif|jpg|png';
    $this->upload->initialize($config);

    // 执行图片上传
    if ($this->upload->do_upload('userfile')) {
        // 获取上传后的图片信息
        $upload_data = $this->upload->data();
        $image_name = $upload_data['file_name'];
        $image_path = $config['upload_path'] . $image_name;

        // 将图片信息插入数据库
        $data = array(
            'image_name' => $image_name,
            'image_path' => $image_path,
            'batch' => '批次号'
        );
        $this->db->insert('images', $data);

        // 成功上传并插入数据库
        echo "图片上传成功并插入数据库。";
    } else {
        // 上传失败
        echo "图片上传失败。";
    }
}