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Date: Tue, 24 Jul 2012 03:24:03 -0700
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To: Sanford Whiteman <swhitemanlistens-software@cypressintegrated.com>
Cc: Yahav Gindi Bar <internals@lists.php.net>
Content-Type: multipart/alternative; boundary=f46d0418281a5a9fe904c590c5e9
Subject: Re: [PHP-DEV] Implicit isset in ternary operator
From: ww.galen@gmail.com (Galen Wright-Watson)

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Content-Type: text/plain; charset=ISO-8859-1

On Sun, Jul 22, 2012 at 9:08 PM, Sanford Whiteman <
swhitemanlistens-software@cypressintegrated.com> wrote:

> [...]
> You do raise (maybe on purpose, not totally clear what you were
> getting at) the question of whether a more complex (expr1) in one of
> these theoretical ternarys w/implicit isset, however it is
> implemented, would apply the isset to _any_ variable in (expr1)? That
> is, if $a or $b do not exist, does
>
> $a > $b ?? ...
>
> return an error? What if both do not exist?


My feeling is that either more complex expressions for operators with an
implicit "isset" or "!empty" shouldn't work, or that they should cause
notices. It's a moot point for null-coalescing operators. Since the
proposal is to deal with specific, common usage patterns, it should stay
focused on those patterns unless during development it's revealed that a
more general case is as easy or easier to implement.

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