Everything

php

Extending internal classes like mysqli

php.internals

Bert Slagter

22 years ago

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

Marcus Börger

22 years ago

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

--
Best regards,
Marcus                            mailto:helly@php.net

Bert Slagter

22 years ago

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:

Bert Slagter

22 years ago

The last few days I've been working with mysqli, and every hour I work
with it, my worry grows. It's far from finished: no good documentation
in the ext dir, below average online documentation, partly implemented
object orientation (no destructor, no extensions allowed, etc).

Is there any chance this will get better soon? I heard on the PHP
Conference in Amsterdam that both PHP 5 and MySQL 4.1 are expected to be
final somewhere this summer, so I'd expect some improvement in this
extension soon ;)

Bert

Bert Slagter wrote:

George Schlossnagle

22 years ago

On May 25, 2004, at 8:47 PM, Bert Slagter wrote:

> The last few days I've been working with mysqli, and every hour I work
> with it, my worry grows. It's far from finished: no good documentation
> in the ext dir, below average online documentation, partly implemented
> object orientation (no destructor, no extensions allowed, etc).
>
> Is there any chance this will get better soon? I heard on the PHP
> Conference in Amsterdam that both PHP 5 and MySQL 4.1 are expected to
> be final somewhere this summer, so I'd expect some improvement in this
> extension soon ;)

Congrats!  I hear we're accepting patches now.

George