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To: "'Rasmus Schultz'" <rasmus@mindplay.dk>,
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Date: Sun, 7 Oct 2012 21:06:56 +0100
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Subject: RE: [PHP-DEV] Re: Arrays which have properties of sets
From: jared.williams1@ntlworld.com ("Jared Williams")
References: <CADqTB_gemY8FubhTwH75LG4XB87MNMjScTpu2KUrqqagMXi38w@mail.gmail.com>

 

> -----Original Message-----
> From: Rasmus Schultz [mailto:rasmus@mindplay.dk] 
> Sent: 07 October 2012 02:10
> To: internals@lists.php.net
> Subject: [PHP-DEV] Re: Arrays which have properties of sets
> 
> First off, let me say - as you pointed out, when the values 
> are unique, they are best represented as keys... however, 
> this of course applies only to value-types, which isn't the 
> problem, and not why I started this conversation in the first 
> place. Objects don't work as keys. And objects do not always 
> have a value that you can use as keys.

See SPL's SplObjectStorage. That allows object instances as keys.

Jared