php电子书

				4-5-5.php				//类型提示.								class NormalUser{					private $name;					public function setName($_name){						$this->name = $_name;					}					public function getName(){						return $this->name;					}				}								class UserAdmin{					public static function changeName(NormalUser $_user,$_name){						$_user->setName($_name);					}				}				UserAdmin::changeName("anyType","Tom");												?>