mp> to TRUE.</p>

<code>$filename = $this->security->sanitize_filename($this->input->post('filename'), TRUE);</code>

<!-- @todo write docs for CSRF methods -->

<h2>Cross-site request forgery (CSRF)</h2>

<p>You can enable csrf protection by opening your <kbd>application/config/config.php</kbd> file and setting this:</p>
<code>$config['csrf_protection'] = TRUE;</code>

<p>If you use the <a href="../helpers/form_helper.html">form helper</a> the <var>form_open()</var> function will automatically insert a hid