title: how can i check the value of a variable from a controller in codeigniter
body: <p>I am doing an upload image file in CodeIgniter. I want to trace out the image in my code and update my database path with it. I want to print the <code>$image_path</code> variable in the code below where it was located in my controller.</p>
  
  <p>How can I print the <code>$image_path</code> variable to display or check its value inside the controller or maybe echo it out  ?</p>
  
  <p>Here it is:</p>
  
  <pre><code>&lt;?php
  public function upload_file()
  {
          $status = "";
          $msg = "";
          $file_element_name = 'userfile';
  
          if ($status != "error") {
                  $config['upload_path'] = './assets/upimages/';
                  $config['allowed_types'] = 'gif|jpg|png';
                  $config['max_size'] = 1024 * 8;
                  $config['encrypt_name'] = FALSE;
                  $this-&gt;load-&gt;library('upload', $config);
                  if (!$this-&gt;upload-&gt;do_upload($file_element_name))
                  {
                          $status = 'error';
                          $msg = $this-&gt;upload-&gt;display_errors('', '');
                  }
                  else
                  {
                          $data = $this-&gt;upload-&gt;data();
                          $image_path = $data['full_path'];
                          if(file_exists($image_path))
                          {
                                  $status = "success";
                                  $msg = "File successfully uploaded";
                          }
                          else
                          {
                                  $status = "error";
                                  $msg = "Something went wrong when saving the file, please try again.";
                          }
                  }
                  @unlink($_FILES[$file_element_name]);
          }
          echo json_encode(array('status' =&gt; $status, 'msg' =&gt; $msg));
  }
  ?&gt;
  </code></pre>