1 
     _name=$_name;    12         }13         public abstract function getName();14     }15 16     class Book extends Goods{17         public $_author;18 19         //实现其父类的方法体20         public function getName(){21             $this->_name=$_name;22             $this->_author=$_author;23 24         }25     }26 27     class Phone extends Goods{28         public $_brand;29         //实现其父类的方法体30         public function __construct($_name, $_brand){31             parent::__construct($_name);32             $this->_brand=$_brand;33         }34 35         public function getName(){36             $this->_name=$_name;37             $this->_brand=$_brand;38         }39     }40 41     //实例化对象42     $book = new Book('php从入门到精通','mingrikeji');43     $book->getName();44     $p = new Phone('aa','aa');45     $p->getName();