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Date: Thu, 14 Apr 2011 16:05:45 +0200
Message-ID: <BANLkTimiH2vYWEY8JAf0P_GD81AqGmStDQ@mail.gmail.com>
To: internals@lists.php.net
Content-Type: multipart/alternative; boundary=0016e646129ef17ced04a0e16b4c
Subject: Re: [PHP-DEV] Implicit isset/isempty check on short-ternary operator
From: landeholm@gmail.com (Hannes Landeholm)

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Content-Type: text/plain; charset=ISO-8859-1

Trying to summarize this discussion... I think we can all agree that the
main problem is "code duplication for array access when parameters are
possibly not existing". I think we all can also agree that @ can be both
used properly and misused - and it is a blunt tool and not a nice solution
to the previously stated problem.

Some suggested that the ternary if comparison should suppress the notice
automatically. This would break existing code and also be confusing since
people expect a ternary if and normal if to work the same way.

Some suggested ?? as an array access operator that suppresses the notice and
has 3 variants: A: nothing specified - uses null as default, B: has default
specified, C: returns X if index exists or Y if index doesn't exist. This
effectively solves the code duplication problem and is a shortcut for saying
"the array index may or may not exist".

One person said that the relation between ? and ?? and == and === would make
the operator non-intuitive. Other people disagreed and claimed the opposite.

So basically the discussion now is what exact characters that should be used
to represent this operator? I really hope we can get this implemented
quickly... I worked with $_POST yesterday and I could really use that ??
operator.

~Hannes

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