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Date: Tue, 25 May 2004 16:12:56 +0300
To: "Aidan Lister" <aidan@php.net>,internals@lists.php.net
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Subject: Re: [PHP-DEV] Re: Internal casting of objects as array keys
From: andi@zend.com (Andi Gutmans)

This code doesn't seem to have changed. Can you send me a 3-4 liner which 
errors out in PHP 4 and not in PHP 4?

Thanks,

Andi

At 11:03 PM 5/25/2004 +1000, Aidan Lister wrote:
>I'm going to go ahead and post this as a bug, unless there is a reason noone
>replied...
>
>"Aidan Lister" <aidan@php.net> wrote in message
>news:20040522064028.3397.qmail@pb1.pair.com...
> > Hello devs,
> >
> > I'd like to discuss the use of objects as array keys.
> >
> > <?php
> > class idobject {
> >     private $_id;
> >     function __construct ($id) { $this->_id = $id; }
> >     function __tostring () {  return (int)$this->_id; }
> > }
> >
> > $blah1 = new idobject(1);
> > $blah2 = new idobject(2);
> > $blah3 = new idobject(3);
> > $blah4 = new idobject(4);
> >
> > $array = array (
> >  $blah1 => 'blah1',
> >  $blah2 => 'blah2',
> >  $blah3 => 'blah3',
> >  $blah4 => 'blah4',
> >  );
> >
> > echo "<pre>";
> > var_dump($array);
> > echo "</pre>";
> > ?>
> >
> > In PHP4 this results in an error,
> > In PHP5 there is no error, the array is simply empty.
> >
> > An array key can only be a string/int, thus, when someone attempts to use
>an
> > array as a key would it not make sense to cast the object?
> >
> > This behaviour would then be consistant with resources.
> >
> > Regards,
> > Aidan
>
>--
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