Yes and no (in this case).
Yes, it'll be evaluated in each iteration and no, I don't think you'd
gain that much in this case because the evaluation would only take
place twice. Though I don't know how expensive array_slice vs.
creation of another variable and assigning a value to it is ....
But if you'd operate on large arrays it might make sense pulling the
eval out of the loop.
At least that's what I read in a tuning related article on zend.com
Richard
Friday, April 30, 2004, 8:37:10 AM, thus was written:
> Just a quick follow-up question on that:
> Curt Zirzow wrote:
>>foreach(array_slice($filenames, 0, 2) as $filename) {
>> $files[] = "path/to/" . $filelname;
>>}
>>
>>
> Will a function (such as the array_slice here) in a foreach statement
> get re-evaluated for each iteration, or is it evaluated just once?
> In other words, is there anyhing gained by doing:
> $short_array = array_slice($filenames, 0, 2);
> foreach($short_array as $filename) {
> $files[] = "path/to/" . $filelname;
> }
> /Mattias
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