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To: internals@lists.php.net, Marcus Boerger <helly@php.net>
Message-ID: <40AE76A2.4050901@procurios.nl>
Date: Fri, 21 May 2004 23:37:38 +0200
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Subject: Re: [PHP-DEV] Extending internal classes like mysqli
From: bert@procurios.nl (Bert Slagter)

Hi Marcus,

Thanks for your clear answer :). What are the future plans concerning 
this issue? Will I be able to just extend this class as I want? For 
which version is that planned? The answers to these questions heavily 
influence design choices I have to make now.

Oh, and I'm curious why the article on Zend.com mentions that 
extendability is a key feature of mysqli. Even though it cannot be 
extended.. :)

Bert


Marcus Boerger wrote:

> Hello Bert,
> 
> some of the internal classas cannot be extended and unfortunatley they are
> not marked as 'final' right now. For you that means you need to extend it
> by a proxy class that reimplements the original class protocol and uses
> the original class as a property.
> 
> Friday, May 21, 2004, 2:52:08 PM, you wrote:
> 
> 
>>Good afternoon!
> 
> 
>>Could anyone explain what we're supposed to do with internal classes 
>>like the mysqli class.
> 
> 
>>In an article on Zend.com 
>>(http://www.zend.com/php5/articles/php5-mysqli.php) the fact that the 
>>object oriented interface can be extended is brought as a major feature. 
>>But it seems that it's impossible to extend the mysqli class, see my bug 
>>at http://bugs.php.net/bug.php?id=28430.
> 
> 
>>What I want is this. I need some custom logging for my database layer. 
>>So I want to extend the mysqli class and overwrite one or two methods 
>>and add some custom methods.
> 
> 
>>Shouldn't I be able to just do:
> 
> 
>>class foo extends mysqli
>>{
>>}
> 
> 
>>$foo = new foo();
> 
> 
>>Right now this doesn't work - the variable $foo->thread_id isn't 
>>available for example.
> 
> 
>>Is this intended behaviour?
> 
> 
>>Bert Slagter
> 
> 
> 
> 
>