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Date: Thu, 3 May 2007 15:55:43 +0100
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Subject: Re: [PHP-DEV] While-else
From: robinv@gmail.com ("Robin Vickery")

On 28/04/07, Pelle Ravn Rosfeldt <PelleRR@it-college.dk> wrote:
> Hi there.
>
> Is it possible to make a "while" with a "else"-statement in PHP6?
> I know that it's not the first time this subject is up, but my research
> shows that a lot of people miss it. Including me.
>
> Here's an example of what I mean:
> ---------------------
> <?
> $i = 1;
> while ($i <= 10) {
>     echo $i++;
> } else {
>     echo "The while couldn't be executed!";
> }
> ?>
> ---------------------
>
> Python & Perl already have this function. So why not PHP?

The 'but everyone else is doing it' argument is particularly weak when
it's not actually accurate.

$ man perlsyn
> The following compound statements may be used to control flow:
> [...]
>           LABEL while (EXPR) BLOCK
>           LABEL while (EXPR) BLOCK continue BLOCK

$ perl -le '$i = 99; while ($i < 10) { $i++; } else { print "Oh..."; }'
syntax error at -e line 1, near "} else"

I can't see any point in it myself. It doesn't read naturally and it
doesn't add anything that you don't get by preceding your
while with a simple if statement.

-robin