title: escapeshellarg() has been disabled for security reasons
body: <p>When I want to upload anything in any form I see the <strong>Warning: escapeshellarg() has been disabled for security reasons</strong> message on my site. What can I do to fix this?</p>
  
  <p>My framework is codeigniter final version.</p>
  
  <p>Here is the full warning:</p>
  
  <pre><code>A PHP Error was encountered
  
  Severity: Warning
  
  Message: escapeshellarg() has been disabled for security reasons
  
  Filename: libraries/Upload.php
  </code></pre>