PHP设计模式系列-策略模式

cdArr['title'] = $title;
		$this->cdArr['info']  = $info;
	}
	
	public function getCd($typeObj) {
		return $typeObj->get($this->cdArr);
	} 
}

class json {
	public function get($return_data) {
		return json_encode($return_data);
	}
}

class xml {
	public function get($return_data) {
			$xml = '';
			$xml .= '';
				$xml .= '' .serialize($return_data). '';
			$xml .= '';
			return $xml;
	}
}

$cd = new cd('cd_1', 'cd_1');
echo $cd->getCd(new json);
echo $cd->getCd(new xml);