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Subject: Extending internal classes like mysqli
From: bert@procurios.nl (Bert Slagter)

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