Question

我有一个程序来获取一周和一周的开始日期和结束日期。以下是代码。

function getStartAndEndDate($week, $year) {
  $dto = new DateTime();
  $dto->setISODate($year, $week,0);
  $ret['week_start'] = $dto->format('Y-m-d');
  $dto->modify('+6 days');
  $ret['week_end'] = $dto->format('Y-m-d');
  return $ret;
}

$week_array = getStartAndEndDate(5,2017);
print_r($week_array);

这将输出结果为

Array ( [week_start] => 2017-01-29 [week_end] => 2017-02-04 )

但我需要分两周参加。例如，结果应如下

Array ( [week_start] => 2017-01-29 [week_end] => 2017-01-31)
Array ( [week_start] => 2017-02-01 [week_end] => 2017-02-04)

这意味着我需要不同月份的单独值。任何帮助将不胜感激。

Answer 1

您逐个比较两个日期并使用't'格式来获取该月的最后一天。请按照description of date() function 了解有关所有可用格式的详情以及下面的示例。

除非您确实需要可变版本，否则最好使用DateTimeImmutable代替DateTime。

function getStartAndEndDate($week, $year)
{
    $dto = (new DateTimeImmutable())->setISODate($year, $week, 0);
    $weekStart = $dto;
    $weekEnd = $dto->modify('+6 days');

    $ret = [];
    if ($weekStart->format('m') === $weekEnd->format('m')) {
        $ret[] = [
            'week_start' => $weekStart,
            'week_end' => $weekEnd,
        ];
    } else {
        $ret[] = [
            'week_start' => $weekStart->format('Y-m-d'),
            // 't' = the last day of the month.
            'week_end' => $weekStart->format('Y-m-t'),
        ];

        $ret[] = [
            // The first day of the month.
            'week_start' => $weekEnd->format('Y-m-01'),
            'week_end' => $weekEnd->format('Y-m-d'),
        ];
    }

    return $ret;
}

在月份开始和月末结束时获取一周的开始日期和结束日期

1 个答案: