If $a is undefined and you do is_null($a) I supposed you get true.
I was talking about a language construct which will give false in this case.
Anyway, it's not something I think we should change right now.
I think Andrei's MySQL patch should be reverted though. Many people are
doing isset($row["foo"]) on their MySQL query results. Today if "foo" is
NULL it will return false. If this is ever changed (some people thing it
should) it will return true. So why not change the MySQL module back to the
way it was? It worked for everyone and it might allow us to make this
change in future.
Andi
At 05:16 PM 5/3/2001 +0200, Cynic wrote:
>RTFM :))
>
>http://www.php.net/manual/en/html/function.is-null.html
>
>At 16:47 3.5. 2001, Andi Gutmans wrote the following:
>--------------------------------------------------------------
> >At 10:43 AM 5/3/2001 -0400, Joe Brown wrote:
> >>What about an isnull() function, opposed to key_exists();
> >>
> >>IsPossible()?
> >
> >Yeah that's definitely a possiblity but then you'd have to do something
> like.
> >if (isset($a["foo"]) || isnull($a["foo"))
> >
> >Kind of sucky.
> >But we should think of a good resolution for a major version.
> >
> >Andi
> >
> >
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>-------------
>And the eyes of them both were opened and they saw that their files
>were world readable and writable, so they chmoded 600 their files.
> - Book of Installation chapt 3 sec 7
>
>
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