Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:10693
Return-Path: <schlueter@phpbar.de>
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Delivered-To: mailing list internals@lists.php.net
Received: (qmail 28639 invoked by uid 1010); 21 Jun 2004 16:34:55 -0000
Delivered-To: ezmlm-scan-internals@lists.php.net
Delivered-To: ezmlm-internals@lists.php.net
Received: (qmail 28595 invoked by uid 1007); 21 Jun 2004 16:34:55 -0000
Message-ID: <20040621163454.28593.qmail@pb1.pair.com>
To: internals@lists.php.net, Ard Biesheuvel <abies@php.net>
Date: Mon, 21 Jun 2004 18:34:45 +0200
References: <20040621125401.81779.qmail@pb1.pair.com>
Lines: 61
User-Agent: KNode/0.7.6
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7Bit
X-Posted-By: 84.128.41.58
Subject: Re: behaviour of static calls to regular methods
From: schlueter@phpbar.de (Johannes Schlueter)

Hi,

yes, afaik it's intentional. This was made for making parent::foo() work.
Here's a shorter (at least a bit shorter *g*) example of this behavior:

<?php
class foo {
  function a() {
    bar::b();
  }
}
class bar {
  function b() {
    var_dump($this);
  }
}
$foo = new foo();
$foo->a(); // Calls bar::b()
?>

Prints:

object(foo)#1 (0) {
}

So in a static call $this holds the instance of the calling object.

johannes

Ard Biesheuvel wrote:

> 
> Is the fact that the following code works intentional ?
> 
> class S {
>          function func() {
>                  A::meth();
>          }
> }
> 
> class A {
>          private $bar;
> 
>          function meth() {
>                  $this->bar="bar";
>          }
> 
>          function func() {
>                  S::func();
>                  echo "$this->bar\n";
> 
>          }
> }
> 
> 
> $a = new A;
> $a->func();
> 
> ... so A::$this is accessed through two static calls to different classes.
>