类的继承 简单案例

sun

类的继承
<?php
class Person {
var $name;
var $age;
function say() {
  echo "我的名字叫：".$this->name."<br />";
  echo "我的年龄是：".$this->age;
}
}
// 类的继承

class Student extends Person {
public function doing(){
  $this->name ="小明";
  $this->age=25;
  echo $this->say();
}

}

$t1 = new Student();
$t1->doing();