Posted by John Nichel on 09/30/21 11:30

Richard Lynch wrote:
> Somewhere in the manual (damned if I can find it now) it says (or used
> to say) that you can or can't safely do this:
>
> while (list($k, $v) = each($array)){
> if (...) unset($array[$k]);
> }
>
> I don't even remember if it's safe or not, but I swear I saw it not
> that long ago...
>
> Anyway, can you do *this* safely as a DOCUMENTED FEATURE:
>
> foreach($array as $k => $v){
> if (...) unset($array[$k]);
> }
>
> I'm sure I could test it and maybe find out if "it works" but is it
> documented behaviour I can rely on? I'm sure not finding this in the
> manual now that I go looking for it, though I know I saw it there
> before.

I would *think* (just my opinion without much thought on a Friday
morning) that this would/could be unsafe _if_ it was a for loop on a
numerical indexed array. Of course, my thinking may change after my
first bottle of Dew. ;)

> PS
> I'm being dragged kicking and screaming into using this new-fangled
> 'foreach' thing instead of while/list/each, and I don't really care
> for it so far. :-)

For the longest time, I hated foreach. Looked at other people's code
who used it, and just wanted to strangle them. However, I was sorta
forced into it about 8 months ago, and now I'm in the camp of, "Damn, I
really like this".

--
John C. Nichel
ÜberGeek
KegWorks.com
716.856.9675
john@kegworks.com

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