setTimestampFormat example

        if (!is_array($config) || empty($config)) {
            /** @see Zend_Log_Exception */
            throw new Zend_Log_Exception('Configuration must be an array or instance of Zend_Config');
        }

        $log = new self;

        if (array_key_exists('timestampFormat', $config)) {
            if (null != $config['timestampFormat'] && '' != $config['timestampFormat']) {
                $log->setTimestampFormat($config['timestampFormat']);
            }
            unset($config['timestampFormat']);
        }

        if (!is_array(current($config))) {
            $log->addWriter(current($config));
        } else {
            foreach($config as $writer) {
                $log->addWriter($writer);
            }
        }