title: Cant Upload doc format files in codeigniter
body: <pre><code>$config['allowed_types'] = 'doc|Doc';
  </code></pre>
  
  <p>I want to upload Doc format file only but cant upload doc format file just written The filetype you are attempting to upload is not allowed.</p>
  
  <p>Why?</p>
  
  <p>How to solve issue,
  I add mimes file,</p>
  
  <pre><code>'doc'   =&gt;  'application/msword',
                  'docx'  =&gt;  array('application/vnd.openxmlformats-officedocument.wordprocessingml.document', 'application/zip'),
                  'xlsx'  =&gt;  array('application/vnd.openxmlformats-officedocument.spreadsheetml.sheet', 'application/zip'),
  </code></pre>