Why? It's only interesting if you're trying to understand the table schema
from one of the arrays. The right way to do it (IMHO) would be by querying
the result using the field fetching functions...
Zeev
At 13:12 30/4/2001, David Croft wrote:
>mysql_fetch_array (and probably others) return a key with 'null' as the
>value if the field is null. This is distinct from that field not having
>been returned at all/not existing.
>
>--
>|> /+\ \| | |>
>
>David Croft
>Infotrek
>On Mon, 30 Apr 2001, Zeev Suraski wrote:
>
> > Why would you care if a key exists and is null? In general the behavior is
> > so close to isset() that it's annoying to have to introduce a whole new
> > function just for this difference.
> >
> > Zeev
> >
> > At 04:50 30/4/2001, David Croft wrote:
> >
> > >There doesn't seem to be any way for a php script to determine whether a
> > >given key exists in an array. isset($arr['x']) fails when it exists but
> > >has a null value. I know there are ways around it like using foreach or
> > >array_keys but these don't seem very efficient.
> > >
> > >I would like to add a function key_exists, with the following proto:
> > >
> > >bool key_exists(array search, string key)
> > >
> > >Please let me know if this is inappropriate or I have missed something
> > >obvious, otherwise I shall add this tomorrow. Thanks,
> > >
> > >David.
> > >
> > >--
> > >|> /+\ \| | |>
> > >
> > >David Croft
> > >Infotrek
> > >
> > >
> > >--
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> > --
> > Zeev Suraski <[EMAIL PROTECTED]>
> > CTO & co-founder, Zend Technologies Ltd. http://www.zend.com/
> >
> >
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> >
> >
--
Zeev Suraski <[EMAIL PROTECTED]>
CTO & co-founder, Zend Technologies Ltd. http://www.zend.com/
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