 <p>Your echos are failing;</p> <p><code>echo(&lt;p&gt;test1&lt;/p&gt;);</code> should be <code>echo('&lt;p&gt;test1&lt;/p&gt;');</code></p> <p>and <code>echo(&lt;h1&gt;fail&lt;/h1&gt;);</code> should be <code>echo('&lt;h1&gt;fail&lt;/h1&gt;');</code></p> <p>FYI: echo doesn't require brackets, you could do <code>echo '&lt;h1&gt;fail&lt;/h1&gt;';</code> </p>