Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:61527
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Received-SPF: pass (pb1.pair.com: domain gmail.com designates 209.85.217.170 as permitted sender)
MIME-Version: 1.0
In-Reply-To: <CAESVnVrFCgvXodsGL_PMz=84O4x=Zn+BuAZ9TRxVTbj-dAnWPg@mail.gmail.com>
References: <op.whnt7vdjidpuyk@damnation>
	<CAESVnVq7tCP3oCwgyq1BGz8JmoAGUY1anE_TAe2cZeErKNXCBQ@mail.gmail.com>
	<op.whpjg0eqidpuyk@damnation>
	<CAESVnVoTSP-9nXoj1LffgdhXK8L_a7aVbsgy+Z4y9ncku2EVNQ@mail.gmail.com>
	<CAF+90c_WjedgG0zZo5kGqNGUBG7YV0R6S5p-u9Z6y93oBDER2w@mail.gmail.com>
	<CAESVnVrFCgvXodsGL_PMz=84O4x=Zn+BuAZ9TRxVTbj-dAnWPg@mail.gmail.com>
Date: Fri, 20 Jul 2012 01:22:38 +0200
Message-ID: <CAF+90c_qtGFqzv3V4Z4DihWSUkVMFvC0JGrDN2et_jMLP58TVQ@mail.gmail.com>
To: Sara Golemon <pollita@php.net>
Cc: Gustavo Lopes <glopes@nebm.ist.utl.pt>, 
	"internals@lists.php.net" <internals@lists.php.net>
Content-Type: text/plain; charset=ISO-8859-1
Subject: Re: [PHP-DEV] zend_parse_parameters() improvements
From: nikita.ppv@gmail.com (Nikita Popov)

On Fri, Jul 20, 2012 at 12:20 AM, Sara Golemon <pollita@php.net> wrote:
> Okay, well... the main pieces of feedback I'd give on it then is to not
> change the behavior of the '!' modifier.  That's bad BC.
The behavior for pointer-params isn't changed. Only non-pointer params
will then accept the additional is_null argument.

> FWIW, there are a few examples of this being handled by defining the default
> value of the parameter to something non-sensical (such as a length of -1),
> then doing zpp with "|l!" would leave the default -1 alone when NULL is
> passed, and you can treat as "not passed".  Granted this is a bit of a hack
> and won't work for all situations.  Your approach is more comprehensive,
> just saying that for many cases it's not strictly needed.
If I'm not much mistaken this is not actually possible. NULL is
interpreted by PHP as a zero-y value. So the variable will be just set
to 0 and you have no way to discern a real 0 and NULL.

Nikita