“Codeigniter 3 Carga de imagen” Código de respuesta

Codeigniter 3 Carga de imagen

<?php<?phpdefined('BASEPATH') OR exit('No direct script access allowed');
class User extends CI_Controller {
 
 public function index(){
   // load base_url  
   $this->load->helper('url');
 
   // Check form submit or not 
   if($this->input->post('upload') != NULL ){ 
      $data = array(); 
      if(!empty($_FILES['file']['name'])){ 
         // Set preference 
         $config['upload_path'] = 'uploads/'; 
         $config['allowed_types'] = 'jpg|jpeg|png|gif'; 
         $config['max_size'] = '100'; // max_size in kb 
         $config['file_name'] = $_FILES['file']['name']; 

         // Load upload library 
         $this->load->library('upload',$config); 
   
         // File upload
         if($this->upload->do_upload('file')){ 
            // Get data about the file
            $uploadData = $this->upload->data(); 
            $filename = $uploadData['file_name']; 
            $data['response'] = 'successfully uploaded '.$filename; 
         }else{ 
            $data['response'] = 'failed'; 
         } 
      }else{ 
         $data['response'] = 'failed'; 
      } 
      // load view 
      $this->load->view('user_view',$data); 
   }else{
      // load view 
      $this->load->view('user_view'); 
   } 
 }
}