4-2-4.php

php电子书

4-2-4.php <br>
继承自一个类,实现两个接口,里面三个抽象方法.<br>
<?
class Student{
	protected $grade ; 
	public function  getGrade(){
		return $this->grade;
	}
}
interface  User{
	function getName();
    function setName($_name);	
}
//只有管理员可以设置公告
interface Administrator{
	function setBulletin($_bulletin);
}
 //为了节省版面,下面方法只写空的实现.不写具体内容了.
class StudentAdmin extends Student implements User,Administrator {
	function getName(){}
	function setName($_name){}
	function setBulletin($_bulletin){}
}
$s = new StudentAdmin();
echo  $s->getGrade();
echo $s->getName();
echo $s->setBulletin("公告内容");
?>