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Subject: Re: Internal casting of objects as array keys
From: aidan@php.net ("Aidan Lister")

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