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Date: Fri, 15 Aug 2014 18:11:28 +0200
Message-ID: <CAF+90c8qONYL5=jOMgbxjbQ-SGDB_jR48WVB80Oaak0Jqv4Uww@mail.gmail.com>
To: Christoph Becker <cmbecker69@gmx.de>
Cc: Andrey Andreev <narf@devilix.net>, PHP internals <internals@lists.php.net>, 
	Andrea Faulds <ajf@ajf.me>, "guilhermeblanco@gmail.com" <guilhermeblanco@gmail.com>
Content-Type: multipart/alternative; boundary=089e011847a21714c20500ad468b
Subject: Re: [PHP-DEV] [RFC] Introduce Abstract Syntax Tree
From: nikita.ppv@gmail.com (Nikita Popov)

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On Fri, Aug 15, 2014 at 5:58 PM, Christoph Becker <cmbecker69@gmx.de> wrote:

> Andrey Andreev:
>
> > I'd personally find it horrible if $foo[$i] = $bar[$i++]; is executed
> > right-to-left, but given that your examples are a bit weird, I'm not sure
> > if mine is affected. Is it?
>
> Isn't that evaluated from right to left already since PHP 5.1.0?  See
> <http://3v4l.org/Ivfdr#v510>.
>

Yes, anything containing simple variables (like $i) will often deviate from
the usual evaluation order due to the CV optimization. I don't touch that.
What I've changed now is that ${a()}[b()] = c() will continue to call a, b,
c, rather than calling c, b, a (which was what the AST implementation
initially did). I honestly don't think that it matters, but I figured that
it's best to stick with the more "logical" behavior as long as it's not too
much trouble :)

Nikita

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