Hello,
On Wed, Jan 13, 2010 at 2:36 PM, mathieu.suen
<mathieu.s...@easyflirt.com> wrote:
> Hi,
>
> I came across this:
>
> echo sizeof(array());
> echo sizeof("");
> $a = "";
php.net/count:
"If var is not an array or an object with implemented Countable
interface, 1 will be returned. There is one exception, if var is NULL,
0 will be returned."
> var_dump( empty($a));
> $a = array();
> var_dump(empty($a));
php.net/empty
empty($var) is basically an !isset($var) || !$var
it's not related to count in anyway.
>
> So funny! How something can have a size greater than 0 but still be empty?
> I think PHP is reinventing the inconsistency word.
I think such comments are pretty useless. Try coming with a viable
solution as a patch instead.
>
> But then let assume that empty is just making a cast in array.
If you assume wrong, you can derive all kind of madness.
> $a = "";
> empty($a) //true
> empty((array)$a) //false
>
> Ok so empty is big ugly switch case on type.
No, it's a boolean check, with type juggling involed, see above.
>
> empty(0); //true
> empty(45); //false
>
> Wooow reinventing emptiness on number....
>
> -- Mathieu Suen
>
>
>
>
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>
--
Etienne Kneuss
http://www.colder.ch
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