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Date: Tue, 17 Jan 2017 08:26:03 -0800
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Subject: Re: [PHP-DEV] Improving mail() 5th parameter handling
From: smalyshev@gmail.com (Stanislav Malyshev)

Hi!

> I'm planning to use extra_parameters array like
> 
> $opts = [
>   '-f' => 'some@example.com <mailto:some@example.com>',  // Envelope sender
>   '-4' => null, // Force IPv4
>   '-au' => 'user@example.com <mailto:user@example.com>', // SMTP auth user
>   '-ap' => 'secret', // SMTP auth password
>   '-am' => 'CRAM-MD5', // SMTP auth method
> ];

I don't think it is a good idea. Starting options with "-" is indeed a
tradition, but only a tradition, and nothing prevents a tool from having
different way of accepting options, including long format (--option) or
Windows format (/option) or any other way. Hard-coupling it with
specific sendmail options does not seem a good idea to me. It's better
to tread each option as a full string than trying to parse it and
introduce hard dependencies on specific binary's internals.

> I cannot reseach all kinds of sendmail binaries. If there are exotic
> sendmail binaries, 
> I would like to know the reference for them. Thank you.

I don't think it is a good idea to specialize for specific binaries.

-- 
Stas Malyshev
smalyshev@gmail.com