Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:10809
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
To: "Marcus Boerger" <helly@php.net>
Cc: internals@lists.php.net
Date: Sun, 27 Jun 2004 15:12:32 -0700
Message-ID: <23680.1088374352@zworg.com>
Subject: Re: [PHP-DEV] Base and derived class construction
From: jdavidson@zworg.com ("Jason Davidson")

Quite possible you had something else in mind, im just interested in
knowing why its done this way, is it for performance sake, is it
becuase you beleive php is more flexable this way, is it becuase it
just happened to be as such... 
Im not being critical, Im being curious...

Jason

Marcus Boerger <helly@php.net> wrote:
> 
> Hello Jason,
> 
> maybe this time we neither had c++ nor java in mind, this time it was
> delphi.
> 
> regards
> marcus
> 
> 
> Sunday, June 27, 2004, 8:44:45 AM, you wrote:
> 
> > which languages is this normal too.. 
> > if you refer to java, that uses the 'super' function, you need only
> > explicitly call super if your constructor has arguments, otherwise an
> > implicit call is made to the parents defualt constructor ( one with
> > arguments).  
> > c++ also will call the parent defualt constructor automatically as well
> > i beleive.  
> > that aside, i do release my mistake in the workaround,  ive noted the
> > use of parent::__construct().
> > im not really concerned with coding, i was more simply interested in why
> > it was done this way,  in such a way, that a child class can be
> > inherited with parent class construction.
> 
> > Jason
> 
> > Stefan Walk               <swalk@prp.physik.tu-darmstadt.de> wrote:
> >> 
> >> On Sat, Jun 26, 2004 at 08:03:12PM -0700, Jason Davidson wrote:
> >> > Hi, is there a reason that when a child class is instantiated the parent
> >> > class constructor does not get called?
> >> > The obvious workaournd for this is to simply call
> >> > $this->parentConstructor(); in the child class constructor, however,
> >> > this seems strange.. 
> >> 
> >> parent::__construct(), to be exact :)
> >> 
> >> > 
> >> > Am i way off base here...?
> >> > 
> >> > Thanks
> >> > Jason
> >> 
> >> Most languages i know do that ("forcing" you to call super or alike).
> >> The only small "annoyance" i see is that parent::__construct() doesn't
> >> automatically use the parameters that were passed to the constructor,
> >> but i think one can live with that.
> >> 
> >> Stefan
> >> 
> >> -- 
> >> PHP Internals - PHP Runtime Development Mailing List
> >> To unsubscribe, visit: http://www.php.net/unsub.php
> >> 
> >> 
> 
> 
> 
> 
> -- 
> Best regards,
>  Marcus                            mailto:helly@php.net
> 
>