eference internal" href="user_agent.html"><span class="doc">User Agent Class</span></a> for methods which extract
information from the user agent string.</p>
</dd></dl>

<dl class="method">
<dt id="CI_Input::request_headers">
<code class="descname">request_headers</code><span class="sig-paren">(</span><span class="optional">[</span><em>$xss_clean = FALSE</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Input::request_headers" title="Permalink to this definit