Hi!
Thank you for your response!
The only intention of my code was to investigate the (back then) unexpected
behavior of the if statement.
With $var['test'] set to "blah" this expression should be false
($var['test'] == 0) for what I know ...
$var['test'] = "blah";
var_dump($var['test'] == 0);
//returns bool(true)
Now I know why this happens! According to Table 6.5 of the Operators page in
the PHP Manual in this comparison all of the values are converted to
integer. And atoi("blah") for sure will fail!;-) So you have to use === to
keep the types of the values!
Jan
-----Original Message-----
From: Jim Lucas [mailto:lists@xxxxxxxxx]
Sent: Friday, August 10, 2007 1:47 AM
To: Jan Reiter
Cc: pmcurry@xxxxxxxxx; php-general@xxxxxxxxxxxxx
Subject: Re: I know this is not easy and I'm not stupid but...
Jan Reiter wrote:
> Hi!
>
> Phil:
> Still I am curious what var_dump($userValues['afterDark']); at line 102.5
> would return.
> I managed to recreate that fault with
>
> $var['test'] = "blah";
>
> echo ($var['test']);
>
> if( $var['test'] == 0)
> {
> echo "ok";
> }
>
> //this returns blahok -- not expected.
>
> In my case Var_dump() returns string(4) "blah" as expected.
>
> Using
>
> if( $var['test'] === 0)
>
> behaves as expected!!
Are you wanting to only test for a empty/non-empty string?
if so, use this.
if ( empty($var['test']) ) {
echo "var['test'] is empty";
}
>
>
> Jim:
> TypeCasting would only be effective if you used the type sensitive
> comparison operator === , because with "==" 0 equals NULL equals false
> equals "" and so on ... or do I miss something here??
>
>
> Hope that solves it for you! I'm still investigating why my first examples
> fails. I've got the strong feeling that I'm missing something there. I
don't
> believe in a php bug or a memory leak in this case! Must be something
pretty
> obvious! Anyone a clue??
>
> Thanks,
> Jan
>
>
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