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Date: Fri, 13 Jul 2012 22:04:27 -0400
Message-ID: <CAAyV7nGTQHgFLyeiXavdY0x5wVh=kBr75vp_FWdHgcgU1TAxNQ@mail.gmail.com>
To: Stas Malyshev <smalyshev@sugarcrm.com>
Cc: Brandon Wamboldt <brandon.wamboldt@gmail.com>, Andrew Faulds <ajfweb@googlemail.com>, 
	internals <internals@lists.php.net>
Content-Type: multipart/alternative; boundary=f46d04426740d955a404c4c09dc1
Subject: Re: [PHP-DEV] Re: array_last_key() function
From: ircmaxell@gmail.com (Anthony Ferrara)

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Content-Type: text/plain; charset=ISO-8859-1

Stas,

> I like this idea. array_first_key would be nice too
>
> I am probably missing something, but what those would allow to do that
> rewind/end+key() doesn't do?
>

The big thing that it does that end()+key() doesn't do is really what it
doesn't do (update the internal pointer).

end() modifies the array pointer. So if you try this in user-land:

function array_last_key(array $array) {
    end($array);
    return key($array);
}

It will always force a full copy of the array (at least the hash table).
Implementing this as a core function however would eliminate that one
side-effect...

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