What about a similar construct for checking truth? eg,
$foo = first_true($bar, $baz, $bang);
returns the value of the first variable that passes the if(isset($var)
&& !empty($var)) test.
On 10/31/05, Ford, Mike <M.Ford@leedsmet.ac.uk> wrote:
> On 29 October 2005 22:56, Greg Beaver wrote:
>
> > For an operation as complicated as "use the first variable
> > that exists"
> > I would be most comfortable with:
> >
> > $d = first-existing: $a, $b, $c;
>
> That's a horrible syntax, but a fantastic name for a language construct to do the job. Even better might be (something like) first_isset($a, $b, $c) which tells you precisely what's happening: you get the first value that passes the isset() test.
>
> I also find the ?? / ??= suggestion very attractive - it would have been my suggestion for a suitable operator.
>
> Cheers!
>
> Mike
>
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