关于yii框架中的actions解决办法

public function actionCaptcha(){
		return array(
				'class'=>'system.web.widgets.captcha.CCaptchaAction',
				'height'=>20,
				'width'=>20,
				'maxLength'=>4,
				'minLength'=>4	
		);
	}

	public function actions(){
		return array(
			'captcha'=>array(
				'class'=>'system.web.widgets.captcha.CCaptchaAction',
				'height'=>25,
				'width'=>80,
				'maxLength'=>4,
				'minLength'=>4
			),
		);
	}