The foreach statement works because you are getting the array index
($k) to unset the array item. I think somewhere in the manual it says
it's unsafe because some people might think you could just use unset
($v) to unset the array item. Which wouldn't work because $v is more
of a temporary variable and not a reference to the array item.
On Oct 27, 2005, at 6:18 PM, Richard Lynch wrote:
Somewhere in the manual (damned if I can find it now) it says (or used
to say) that you can or can't safely do this:
while (list($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.
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. :-)
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