title: Layout.php is not showing the header.php part
body: <p><strong>I have Html like below.</strong></p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html lang="en"&gt;
      &lt;head&gt;
          &lt;meta http-equiv="Content-Type" content="text/html; charset=UTF-8"&gt;
          &lt;!-- Meta, title, CSS, favicons, etc. --&gt;
          &lt;meta charset="utf-8"&gt;
          &lt;meta http-equiv="X-UA-Compatible" content="IE=edge"&gt;
      &lt;/head&gt;
      &lt;body style="background:#F7F7F7;"&gt;
          &lt;div class=""&gt;
          &lt;/div&gt;
      &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p><strong>I divided this html in two PHP files. So.There is <code>Header.php</code>. Like Below.</strong></p>
  
  <pre><code>&lt;head&gt;
      &lt;meta http-equiv="Content-Type" content="text/html; charset=UTF-8"&gt;
      &lt;!-- Meta, title, CSS, favicons, etc. --&gt;
      &lt;meta charset="utf-8"&gt;
      &lt;meta http-equiv="X-UA-Compatible" content="IE=edge"&gt;
  &lt;/head&gt;
  </code></pre>
  
  <p><strong>Layout.php</strong></p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html lang="en"&gt;
  
      &lt;? include 'header.php';?&gt;
  
      &lt;body style="background:#F7F7F7;"&gt;
          &lt;div class=""&gt;
          &lt;/div&gt;
      &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <h1>Problem</h1>
  
  <p>Layout.php is not showing the header.php part. </p>