Issue With Objects In PHP

Question

I have a problem with objects in PHP.

<?php
error_reporting( E_ALL | E_STRICT );
##
class Loader {
    function view() {
        echo 'I did it! )';
    }
}
class Controller {
    public $loader;
    function __construct() {
        $this -> loader = new Loader;
    }
}

##
class Foo extends Controller {
    function index() {
        $this -> loader -> view();
    }
}

There are three classes: Loader, Controller and Foo. I want to use method of class Loader in Foo class. I know that __construct() wouldn't run because Foo extends from Controller, but anyway I don't get any error.

So how to use that method there with condition that in Foo I won't need to write more code?

P.S. I'm creating MVC...

I don't understand your problem. Your code is working here... — Rodolphe
– Rodolphe, Commented Mar 1, 2011 at 13:05
(sidenote) Ask yourself if your Controller really is a specialized Loader. If the answer to that is No, then Controller should not inherit from Loader. If Controller just uses a Loader, then you should favor Composition/Aggregation over Inheritance. — Gordon
– Gordon, Commented Mar 1, 2011 at 13:17

alex · Accepted Answer · 2011-03-01 13:06:29Z

4

I know that __construct() wouldn't run because Foo extends from Controller, but anyway I don't get any error.

When instantiating Foo, Controller's __construct() will be run.

The exception is if you make a __construct() within Foo, and forget to call parent::__construct().

The code you posted works fine.

answered Mar 1, 2011 at 13:06

alex

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Comments

rik · Accepted Answer · 2011-03-01 13:07:17Z

0

Add a constructor to Foo that calls parent::__construct();.

http://php.net/manual/en/language.oop5.decon.php

answered Mar 1, 2011 at 13:07

rik

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