title: Fatal error: Call to undefined function get_header()
body: <p>I am using this code to go to a page.  In my directory 
  there is theme folder ch.</p>
  
  <pre><code>&lt;li&gt;
  &lt;a href="&lt;?php echo get_stylesheet_directory_uri(); ?&gt;/ch/bn1.php"&gt;
      &lt;img src="&lt;?php echo get_stylesheet_directory_uri(); ?&gt;/img/bn1.png"&gt;
  &lt;/a&gt;
  &lt;/li&gt;
  </code></pre>
  
  <p>But going to page url wp-content/themes/live/ch/bn1.php shows this message</p>
  
  <blockquote>
    <p>Fatal error: Call to undefined function get_header() in C:\wamp\www\blog\wp-content\themes\live stream\ch\bn1.php on line 1</p>
  </blockquote>
  
  <p>My theme directory is </p>
  
  <pre><code>www/blog/wp-content/themes/live stream
  </code></pre>
  
  <p>My page to go to the directory is </p>
  
  <pre><code>www/blog/wp-content/themes/live stream/ch/bn1.php
  </code></pre>