suggestion: empty() with infinite parameters like isset() View as Markdown

if(any_empty($var1, $var2, $var3)) return "there's an empty var";
if(!any_empty($var1, $var2, $var3)) return "there's no empty vars";

if (all_set($var1, $var2, $var3)) return "all vars are set";
if (!all_set($var1, $var2, $var3)) return "there's an unset var";

but how would you find out which var's, if any, are empty or not set?
otherwise, would seem not very useful...

if(!all_set($var1, $var2, $var3)){
if(!isset($var1)){
echo 'it was 1';
}
if(!isset($var2)){
echo 'it was 2';
}
if(!isset($var3)){
echo 'it was 3';
}
}

On Thu, October 21, 2004 9:13 am, Ron Korving said:

I'm not really anxcious to have an anyempty() function, but I do think
empty() should behalve like an allempty() just like isset() behaves like
an
areallset(). I guess the "weirdness" is in the fact that isset() will give
a
positive reply when something exists, while empty() gives a negative reply
when something exists. I guess this creates the confusion and would make
the
allempty() functionality less likely to be used often. I guess people will
want to check more often if all their vars are set, and therefor an "or"
situation instead of "and" would be more suitable, because then you could
do: if (empty($var1, $var2, $var3)) echo "there's an empty var";
I'd personally prefer the "and" situation, but it's a fact that this would
make it far less useful than the "or". So I can see the confusion and the
reason to just stick with 1 parameter.

I guess there should just be a function like isset() which returns
!empty().
Maybe it should be called isval() or something. Then it could be used for
several vars without confusion:
if (!isval($var1, $var2, $var3)) return "there's an empty var";

This would make sense to everybody I think, because like isset() it would
be
an "and" situation.

Ron

"Jevon Wright" jevon@jevon.org wrote in message
news:008c01c4b6f6$4fd9a450$0a00a8c0@home.jevon.org...

How about anyempty($var1, $var2, $var3, ...) ?

Jevon

----- Original Message -----
From: "Ron Korving" r.korving@xit.nl
To: internals@lists.php.net
Sent: Thursday, October 21, 2004 12:21 AM
Subject: Re: [PHP-DEV] suggestion: empty() with infinite parameters like
isset()

Maybe it was a bad example. Writing "data missing" I was thinking that
at
least one variable should be set.

Ron

"Derick Rethans" derick@php.net schreef in bericht
news:Pine.LNX.4.58.0410201315360.1991@localhost...

Okay, I don't wanna make remarks that may have already been made
earlier,
but I think it should be "all should be empty", because it works
exactly
the
same for isset(), and apparently, a decision was made to give
isset()
that
feature.

Right, but then your example would already no longer have worked:

if (empty($var1, $var2, $var3)) echo "data missing";

so there is no point in adding it like that.

Derick

--
Derick Rethans
http://derickrethans.nl | http://ez.no | http://xdebug.org