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Posted by Rik Wasmus on 09/04/07 23:37
On Tue, 04 Sep 2007 19:33:00 +0200, Michael Fesser <netizen@gmx.de> wrot=
e:
> .oO(The Natural Philosopher)
>> Michael Fesser wrote:
>>>
>>> The second statement simply means that the value of $int, whatever i=
t
>>> may be, evaluates to FALSE.
>>>
>> but what is "false", in this context?
>
> The result after the type cast?
Yup.
>> Null length string? string
>> containing "0" Magic value?
>
> If you write
>
> if ($int) {...}
>
> then there's no other way for PHP than to cast the $int variable to a
> boolean, because that's what the 'if' statement expects. The manual
> explains in detail how this type casting works and which values evalua=
te
> to FALSE:
>
> Converting to boolean
> http://www.php.net/manual/en/language.types.boolean.php#language.types=
..boolean.casting
>
> If you don't want that, then you should not rely on the automatic type=
> juggling, but better explain to PHP what you actually want to test for=
:
>
> if ($int !=3D 0) {...}
Indeed (allthough: $int !=3D=3D 0). The cost of loose types is indeed a =
more =
strict comparison if needed (which is quite natural and simple once you =
=
get used to it).
-- =
Rik Wasmus
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