title: A PHP Error was encountered Filename: core/Loader.php
body: <p>When I open my admin console my page gives me this error:</p>
  
  <pre><code>A PHP Error was encountered
  Severity: Notice
  Message: Only variable references should be returned by reference
  Filename: core/Loader.php
  Line Number: 178
  </code></pre>
  
  <p>I have found out the code and I have it this way:</p>
  
  <pre><code> * @param   string  class being checked for
   * @return  mixed   class object name on the CI SuperObject or FALSE
   */
  public function &amp;is_loaded($class = '')
  {
      if (isset($this-&gt;_ci_classes[$class]))
      {
          return $this-&gt;_ci_classes[$class];
      }
  
      return FALSE;
  }
  </code></pre>
  
  <p>I do not know what I have wrong.
  Could you helpme please.
  thanks.</p>