title: Using require_once in Codeigniter
body: <p>How do I use the <code>require_once</code> php function in Codeigniter on a normal PHP file? I', currently getting an error.</p>
  
  <p><strong>Code:</strong></p>
  
  <p><code>require_once($_SERVER['DOCUMENT_ROOT'].'/php/jformer.php');</code></p>
  
  <p><strong>Error:</strong></p>
  
  <p><code>Message: require_once() [function.require-once]: http:// wrapper is disabled in the server configuration by allow_url_include=0</code></p>
  
  <p><code>Message: require_once(http://localhost/site/php/jformer.php) [function.require-once]: failed to open stream: no suitable wrapper could be found</code></p>