php中的受保护和私有可见性

Question

I have been learning PHP from an online course. I have declared protected class members. These members are not supposed to be accessible outside the class, but I'm able to access them.

This is the class (class.Address.inc.php)

Class Address
 {
     //Street Address
     protected $street_Address_1;
     public $street_Address_2;

     //Name of the city
     public $city_name;

     //Subdivision name
     public $subdivision_name;

     //Postal code
     public $postal_code;

     //country name
     public $country_name;

This is the Demo.php file in which I used the Address class.

<?php

require 'class.Address.inc';

     $address=new Address;
     $address->street_Address_1= "555 Fake Street";//protected but accessible
     $address->street_Address_2="Hello";
     $address->city_name="Townsville";

I am able to access the protected member and initialize it from Demo.php. Shouldn't protected members not be available outside the class from which it was declared?

Answer 1

Not sure but will try to take a little test again....

<?php

require 'class.Address.inc'; //require 'class.Address.inc.php';
$address=new Address;
$address->street_Address_1= "555 Fake Street";//protected but accessible
$address->street_Address_2="Hello";
$address->city_name="Townsville";

Answer 2

how to access protected vars outside class, here you can get its value same you can do for set value.

<?php
class myclass{
    protected $myname;
    public function __construct(){
        $this->myname = "myclass class";
    }
}

class childclass extends myclass{

    public function __construct(){
        parent::__construct();
    }

    public function getMyName(){
        return $this->myname;
    }
}

$obj = new childclass();
echo $obj->getMyName();