</code>/<code class="docutils literal"><span class="pre">exit()</span></code> should not be included
in your code unless it serves a specific purpose other than debugging.</p>
</div>
<div class="section" id="whitespace-in-files">
<h2><a class="toc-backref" href="#id15">Whitespace in Files</a><a class="headerlink" href="#whitespace-in-files" title="Permalink to this headline">¶</a></h2>
<p>No whitespace can precede the opening PHP tag or follow the closing PHP
tag. Output is buffered, so whitespace in your 