/** * @param $className * * @return org_glizy_components_Component|null */ function &_getParentByClass($className) { if (strtolower($this->getClassName()) == $className) { return $this; } else { if (is_object($this->_parent) && method_exists($this->_parent, '_getParentByClass')) { return $this->_parent->_getParentByClass($className); } else { $null = NULL; return $null; } } }