foreach 循环忽略数组顺序

Question

我有一堆不同的对象，我试图将它们组合在一起。他们是工作面试。我希望他们按职位分组，然后按时间分组。从最新到最早。到目前为止，一切都很好。可能有一种不那么复杂的方式来做我正在尝试的事情，但以下代码对我有用，直到我被要求将最近的面试日期放在首位。

function interview_sort($interviews) {

    $titles = get_job_titles();

    foreach($interviews as $interview) {

        if(strtotime($interview->getStart()) > strtotime('-2 weeks')) {

            // get all the interview times no more than two weeks old
            $times[] = strtotime($interview->getStart());

        }
    }

    // we only want one of each
    $times = array_unique($times);

    // sort them from latest to earliest
    rsort($times);

    // we want the closest date first
    $closest = find_closest_date($times, strtotime('today'));

    //store it
    $date = $times[$closest];

    // bin it from it's original position
    unset($times[$closest]);

    // put it on the front
    array_unshift($times, $date);

    print_r($times);

    // group by job title
    foreach ($titles as $title) {

        // group by interview time
        foreach($times as $time) {

            foreach ($interviews as $interview) {

                if($interview->getPostingTitle() == $title && strtotime($interview->getStart()) == $time) {

                    $grouped[$title][$time][] = $interview;
                }
            }
        }
    }
    return $grouped;
}

print_r($times)被写入的点输出数组，第一次为最近，然后根据需要从最晚到最早。但是，$grouped 数组的原始顺序是从最新到最早。

Answer 1

您尚未在 foreach 循环之前声明数组。

function interview_sort($interviews) {

    $times = [];
    $titles = get_job_titles();

    foreach($interviews as $interview) {

        if(strtotime($interview->getStart()) > strtotime('-2 weeks')) {

            // get all the interview times no more than two weeks old
            $times[] = strtotime($interview->getStart());

        }
    }
[...]