菜鸟教程 -- 学的不仅是技术，更是梦想！

   darer49

子类继承带有参数的父类的构造方法：

class students{
    var $name,$age,$sex;
    function __construct($name,$age,$sex){
        $this->name = $name;
        $this->age = $age;
        $this->sex = $sex;
    }
}

class master extends students{
    var $hobby,$address;
    function __construct($name, $age, $sex,$hobby,$address){
        parent::__construct($name, $age, $sex);
        $this->hobby = $hobby;
        $this->address = $address;
    }
}