Thanks guys--passing by reference solved my problem. I was not aware
that the foreach statement works on a copy. This was explained in the
online documentation. Duh!!
Thanks again,
-Andres
Ashley Sheridan wrote:
On Tue, 2009-06-23 at 12:56 -0600, Kirk.Johnson@xxxxxxxxxxx wrote:
Andres Gonzalez <andres@xxxxxxxxxxxxxxx> wrote on 06/23/2009 12:26:38 PM:
I want to modify $results within the foreach. In other words,
during a given pass of this iteration, I want to delete some
of the items based on particular conditions. Then on the next
pass thru the foreach, I want $results to be the newer, modified
array.
This does not seem to work. It appears that the foreach statement
is implemented such that $results is read into memory at the start
so that any modifications I make to it during a given pass, are ignored
on the next pass. Is this true?
foreach works on a copy of an array, so the behavior you saw is expected.
See the online manual.
You could use a while loop, or, instead of unset-ing elements of $results,
store the elements you want to keep into a new array.
Kirk
What about passing it by reference?
foreach($results as &$key => &$item)
{
// modify items here
}
Thanks
Ash
www.ashleysheridan.co.uk
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