title: yii memcache include error
body: <p>I am getting this error:</p>
  
  <pre><code>include(Memcache.php) [&lt;a href='function.include'&gt;function.include&lt;/a&gt;]: failed to open stream: No such file or directory
  </code></pre>
  
  <p>And here is the full description of the problem:</p>
  
  <pre><code>384 * @return boolean whether the class has been loaded successfully
  385      */
  386     public static function autoload($className)
  387     {
  388         // use include so that the error PHP file may appear
  389         if(isset(self::$_coreClasses[$className]))
  390             include(YII_PATH.self::$_coreClasses[$className]);
  391         else if(isset(self::$classMap[$className]))
  392             include(self::$classMap[$className]);
  393         else
  394         {
  395             if(strpos($className,'\\')===false)
  396                 include($className.'.php');
  397             else  // class name with namespace in PHP 5.3
  398             {
  399                 $namespace=str_replace('\\','.',ltrim($className,'\\'));
  400                 if(($path=self::getPathOfAlias($namespace))!==false)
  401                     include($path.'.php');
  402                 else
  403                     return false;
  404             }
  405             return class_exists($className,false) || interface_exists($className,false);
  406         }
  407         return true;
  408     }
  </code></pre>