我有一个codeigniter网站，有多个图像上传，我的控制器如下所示：

$this->load->library('upload');
               $image = array();
               $ImageCount = count($_FILES['pimage']['name']);
               for($i = 0; $i < $ImageCount; $i++){
               $_FILES['file']['name']       = $_FILES['pimage']['name'][$i];
               $_FILES['file']['type']       = $_FILES['pimage']['type'][$i];
               $_FILES['file']['tmp_name']   = $_FILES['pimage']['tmp_name'][$i];
               $_FILES['file']['error']      = $_FILES['pimage']['error'][$i];
               $_FILES['file']['size']       = $_FILES['pimage']['size'][$i];

               // File upload configuration
               $uploadPath = './uploads/products/';
               $config['upload_path'] = $uploadPath;
               $config['allowed_types'] = 'jpg|jpeg|png|gif';

               // Load and initialize upload library
               $this->load->library('upload', $config);
               $this->upload->initialize($config);

               // Upload file to server
               if($this->upload->do_upload('file')){
               // Uploaded file data
               $imageData = $this->upload->data();
                // $uploadImgData[$i]['image_name'] = $imageData['file_name'];
                $uploadImgData[] = $imageData['file_name'];

                $data = array('upload_data' => $this->upload->data());
                               $path=$data['upload_data']['full_path'];
                               $q['name']=$data['upload_data']['file_name'];

                                $config['image_library'] = 'gd2';
                                $config['source_image']   = $path;
                                $config['maintain_ratio'] = true;
                                $config['width']  = 320;
                                $config['height'] = 230;

                                $this->load->library('image_lib');
$this->image_lib->initialize($config);
                               $this->image_lib->resize();

                               unset($config);
                               $this->load->library('image_lib');
                               $this->image_lib->clear();



               }
               }

图像正在上传，但调整大小没有发生，任何人都可以请告诉我什么是错的，在这里，提前感谢