title: failed to open stream: No such file or directory in
body: <pre><code>&gt;     Warning: include_once(/PoliticalForum/headerSite.php) [function.include-once]: failed to open stream: No such file or
  &gt; directory in C:\xampp\htdocs\PoliticalForum\mainHome.php on line 16
  &gt; 
  &gt; Warning: include_once() [function.include]: Failed opening
  &gt; '/PoliticalForum/headerSite.php' for inclusion
  &gt; (include_path='.;C:\xampp\php\PEAR') in
  &gt; C:\xampp\htdocs\PoliticalForum\mainHome.php on line 16
  </code></pre>
  
  <p>Why do I get that Error when I use include_once:</p>
  
  <pre><code>   include_once("/PoliticalForum/headerSite.php");
  </code></pre>