ds such as <code class="docutils literal"><span class="pre">get()</span></code> and <code class="docutils literal"><span class="pre">post()</span></code>, if the
requested data is not found, it will return NULL and you can also
decide whether to run the data through <code class="docutils literal"><span class="pre">xss_clean()</span></code> by passing
a boolean value as the second parameter:</p>
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-&