Re: [PHP-DEV] Fwd: Re: [PHP-PEAR] PEAR::isError() From: Stig S. Bakken (ssb <email protected>)
Date: 12/05/00

It doesn't make sense. But it's very practical syntax-wise, right now
it is impossible to pass a value such as "true" or "array(1,2,3)" to a
function that wants a reference. But as Zeev says, maybe the right
solution in all cases then is to "de-reference :-)" the parameter.

 - Stig

Andi Gutmans wrote:
>
> Why does it make sense to send constants by reference?
>
> Andi
>
> At 03:03 PM 12/4/00 -0500, Chuck Hagenbuch wrote:
> >In case core people interested in this aren't on the pear list...
> >
> >----- Forwarded message from "Stig S. Bakken" <ssb <email protected>> -----
> > Date: Mon, 04 Dec 2000 20:38:17 +0100
> > From: "Stig S. Bakken" <ssb <email protected>>
> >Reply-To: "Stig S. Bakken" <ssb <email protected>>
> > Subject: Re: [PHP-PEAR] PEAR::isError()
> > To: Chuck Hagenbuch <chuck <email protected>>
> >
> >Chuck Hagenbuch wrote:
> > >
> > > I'd like to modify PEAR::isError() to NOT take its argument by reference. I
> > > understand that this may incur a performance penalty. However, I think
> > that
> > > the readability/useability increase of being able to do:
> > >
> > > if (PEAR::isError(function($vars ...))) {
> > > // do error stuff
> > > }
> > >
> > > ... is worth it. Right now we can't do the above unless function() is
> > defined
> > > to return a reference, and you're going to want to check sucess or
> > failure of
> > > non-reference methods sometimes.
> > >
> > > The current situation I have in mind that exemplifies this is
> > Net/SMTP.php; it
> > > has a lot of lines such as:
> > > if (PEAR::isError($this->socket->connect($this->host, $this->port)))
> > > ... this doesn't work, and even with Andi's fix won't work, because
> > > $socket->connect() returns TRUE on success, which is not a variable, and so
> > > can't be passed by reference.
> > >
> > > Any objections?
> >
> >None here. But it kinda sucks that call-time references are obsoleted
> >and at the same time you can't pass non-variables. Andi?
> >
> > - Stig
> >
> >----- End forwarded message -----
> >
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> ---
> Andi Gutmans <andi <email protected>>
> http://www.zend.com/
>
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