parsedown/tests/data/fenced_code_block.html

<pre><code>&lt;?php

$message = 'fenced code block';
echo $message;</code></pre>
<pre><code>tilde</code></pre>
<pre><code class="language-php">echo 'language identifier';</code></pre>
<pre><code class="language-c#">echo 'language identifier with non words';</code></pre>
<pre><code class="language-html+php">&lt;?php
echo "Hello World";
?&gt;
&lt;a href="http://auraphp.com" &gt;Aura Project&lt;/a&gt;</code></pre>
<pre><code>the following isn't quite enough to close
```
still a fenced code block</code></pre>
<pre><code>foo


bar</code></pre>