}
class Teacher extends Human
{
public $level;
public function teach($subject)
{
echo $this->name, '的老师在讲授', $subject, '<br/><br/>';
}
}
class Soldier extends Human
{
public $junxian;
function zhangang()
{
echo '这名战士名字为', $this->name, '在军XIAN为', $this->junxian, ',他/她站岗<br/><br/>';
}
}
$s1 = new Soldier();
$s1->name = '李四';
$s1->junxian = '中校';
$s1->zhangang();
// //////
$s2 = new Soldier();
$s2->name = '赵六';
$s2->eat('面包');
// ////
$t = new Teacher();
$t->name = '张飞';
$t->teach('化学');
$t->say('同学们好,今天咱们开始学习化学这门课');
