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Date: Tue, 23 Sep 2014 00:41:25 -0700
Message-ID: <CAKOpQSyk0-_VqxVEsap6CaUgQ1M+rveyY0AgJa1yekiGWwGYEA@mail.gmail.com>
To: Michael Wallner <mike@php.net>
Cc: Sanford Whiteman <figureonecpr@gmail.com>, PHP Internals <internals@lists.php.net>
Content-Type: multipart/alternative; boundary=089e01229762cc2a7f0503b6b1f2
Subject: Re: [PHP-DEV] [RFC] Change checkdnsrr() $type argument behavior
From: kris.craig@gmail.com (Kris Craig)

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On Tue, Sep 23, 2014 at 12:38 AM, Michael Wallner <mike@php.net> wrote:

> On 2014-09-23 09:30, Kris Craig wrote:
> >
> >
> > On Tue, Sep 23, 2014 at 12:24 AM, Michael Wallner <mike@php.net
> > <mailto:mike@php.net>> wrote:
> >
> >     On 2014-09-23 06:00, Sanford Whiteman wrote:
> >     >> What would happen is it'd throw an E_DEPRECATED for at least the
> >     remainder
> >     >> of 5.x, then throw the usual E_WARNING for a missing argument
> >     starting in
> >     >> 7.x with no default.
> >     >
> >     > Sounds OK to me now that I've noticed this:
> >     >
> >     >     https://bugs.php.net/bug.php?id=68081
> >     >
> >     > Pretty sure that's a sane report, and it's enough to make me say
> >     > checkdnsrr() doesn't work now at all.
> >
> >
> >     Given that this function is over 16 years old [1] and guessing that
> it
> >     was used as a simple kind of email domain verification, I think
> >     checkdnsrr() works as expected [2], [3].
> >
> >     [1] http://marc.info/?l=php-internals&m=90222489331812&w=2
> >     [2] http://tools.ietf.org/html/rfc2821#section-5
> >     [3] http://tools.ietf.org/html/rfc5321#section-5.1
> >
> >     --
> >     Regards,
> >     Mike
> >
> >
> > Except that it doesn't work as expected because most devs (including
> > myself) aren't readily familiar with posts from 1998.  And even if that
> > were its purpose back then, that really has no relevance today, as the
> > purpose and identity of PHP itself has evolved drastically since then.
> >
> > If that really is a concern, though, then I would propose getting rid of
> > checkdnsrr() altogether (or making it an alias of checkmxrr()) and
> > creating a new general-purpose DNS lookup function that returns a
> > boolean.  Of course, I really don't think that's necessary since this
> > stuff from 16 years ago doesn't have any meaningful bearing on how it's
> > being used today by modern PHP developers.
>
> Phew, "modern" or rather "unaware" or "uneager to research"?
> Anyway, I'm done with this topic; I don't see any reason for action,
> except maybe, improving related documentation.
>
>
> --
> Regards,
> Mike
>

Wow that got personal really fast.  I was just saying that, when most devs
look-up a function on php.net, they don't also then search Google for any
decades-old references that might yield some additional insight on the
origin story of the function.  I don't think that means they're not
intellectually curious.

--Kris

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