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Date: Fri, 18 Apr 2014 09:48:36 +0800
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To: Levi Morrison <morrison.levi@gmail.com>
Cc: PHP Internals <internals@lists.php.net>
Content-Type: multipart/alternative; boundary=089e013a26e61bf20404f74759a1
Subject: Re: [PHP-DEV] [pr-645] Add offset to reset() and end()
From: tjerk.meesters@gmail.com (Tjerk Meesters)

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Hi Levi,


On Fri, Apr 18, 2014 at 9:17 AM, Levi Morrison <morrison.levi@gmail.com>wrote:

> On Thu, Apr 17, 2014 at 6:39 PM, Tjerk Meesters <tjerk.meesters@gmail.com>wrote:
>
>> Hi,
>>
>> I've added a PR that satisfies #31375.
>>
>> https://github.com/php/php-src/pull/645
>>
>> It adds a second optional argument to reset() and end() to specify the
>> number of elements that should be skipped (forward or backward).
>>
>> Currently, negative offsets are ignored. Should we raise a notice for such
>> cases? Something like:
>>
>> "Negative offsets are not supported."
>>
>> Any feedback is welcome. Thanks!
>>
>
> Do you have a specific use-case for these changes?
>

Surely you must have seen the feature request on bugs.php.net ;-)

One example could be, traverse array but skip the first N elements:

    $array = [1, 2, 3];
    for (reset($array, 1); $current = each($array); ) {
        var_dump($current['value']);
    }
    // output: int(2) int(3)

Or, get second last element:

    $second_last = end($array, 1); // int(2)


-- 
--
Tjerk

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