public static function registerZend() { if (!self::$zendAutoLoader) { set_include_path(implode(PATH_SEPARATOR, array(sfConfig::get('sf_lib_dir') . '/vendor/', get_include_path()))); require_once 'Zend/Loader/Autoloader.php'; self::$zendAutoLoader = Zend_Loader_Autoloader::getInstance(); } return self::$zendAutoLoader; }