PHP设计模式系列 - 策略模式

    <?php  
    //策略模式  
    //cd类  
    class cd {  
        protected $cdArr;  
          
        public function __construct($title, $info) {   
            $this->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 version="1.0" encoding="utf-8"?>‘;  
                $xml .= ‘<return>‘;  
                    $xml .= ‘<data>‘ .serialize($return_data). ‘</data>‘;  
                $xml .= ‘</return>‘;  
                return $xml;  
        }  
    }  
      
    $cd = new cd(‘cd_1‘, ‘cd_1‘);  
    echo $cd->getCd(new json);  
    echo $cd->getCd(new xml);