title: CodeIgniter how to get hidden field value using form_open_multipart()?
body: <p>I am creating a web application that allows user to insert item data into database.  insert_item page is just a regular HTML form.  When user submits, the controller inserts item data into Item table, and then redirects user to insert_image page.  In this page, I have a hidden field that contains the item_id (primary key for Item table).  This page contains upload file form.</p>
  
  <pre><code>echo form_open_multipart('administration/validate_add_images');
  form_hidden('id', $id);
  $this-&gt;table-&gt;add_row(array(form_upload('uploads')));
  form_submit('submit', 'Upload Images');
  </code></pre>
  
  <p>I can't get the value of id when user submits.  My question: Is it possible to get the hidden field value  using form_open_multipart()?</p>