如何使用Laravel / Carbon比较DST更改时的日期

问题描述

我有一个字段时间为30分钟的对象集合：

我正在扫描列表中的数据漏洞，这意味着该列表应该返回：

dataHoleStart:    2020-03-29 04:30
dataHoleEnd  :    2020-03-29 08:30

今年29日是我遇到的一个问题，因为那是我们更改夏令时的日子。

There is no hole:2020-03-29 01:00
There is no hole:2020-03-29 01:30
There is no hole:2020-03-29 03:00
There is no hole:2020-03-29 03:30
New hole: 2020-03-29 03:00
Existing hole: 2020-03-29 03:30
Existing hole: 2020-03-29 04:00
Existing hole: 2020-03-29 04:30
Existing hole: 2020-03-29 05:00

但是进入我的Postgres数据库，我可以看到数据非常规则，没有漏洞。

这是我的代码：

foreach ($measures as $key => $measure) {
            if ($key == 0) continue;
            $nextTS = (clone $ts_cursor)->addMinutes(30);
            if ($measure->time->eq($nextTS)) {
                $ts_cursor = $nextTS;
                echo "There is no hole:". $measure->time->format('yy-m-d H:i'). "<br/>";
                continue;
            }
            // Here we have a hole.
            if ($missingDataIni != null) {
                // We are in an existing hole
                $ts_cursor = $nextTS;
                echo('Existing hole: ' .$measure->time->format('yy-m-d H:i'). "<br/>");
            } else {
                // We create a new hole
                $missingDataIni = $nextTS;
                $ts_cursor = $nextTS;
                echo 'New hole: '.$measure->time->format('yy-m-d H:i'). "<br/>";
            }

        }

我尝试将Carbon字段转换为时间戳，但仍然存在相同的问题。

此外，在config/app.PHP中，我将时区定义为：

'timezone' => 'Europe/Paris',

我应该如何使用Carbon处理包括DST在内的日期比较？

解决方法

我用getTransitions

解决

代码如下：

// We get the transition at timezone.
$transitions = collect($tz->getTransitions($start->format('U'),$end->format('U')))
    ->map(function ($transition) use ($tz) {
        return (new Carbon($transition['time']))->timezone($tz)->toAtomString();
    })->toArray();

foreach ($measures as $key => $measure) {
    if ($key == 0) continue;
    $nextTS = (clone $ts_cursor)->addMinutes(30);
    if ($measure->time->timezone($tz)->eq($nextTS)) {
        $ts_cursor = $nextTS;
        echo "There is no hole:" . $measure->time->timezone($tz)->toAtomString() . "<br/>";
        continue;
    }
    if (in_array($measure->time->timezone($tz)->toAtomString(),$transitions)) {
        echo "Transition setting ts_cursor:".$ts_cursor->timezone($tz)->toAtomString(). "<br/>";
        $ts_cursor = $ts_cursor->addMinutes(-30);
        continue;
    }

    // Here we have a hole.
    if ($missingDataIni != null) {
        // We are in an existing hole
        echo('Existing hole: ' . $measure->time->timezone($tz)->toAtomString() . "<br/>");
        $ts_cursor = $nextTS;
    } else {
        // We create a new hole
        $ts_cursor = $nextTS;
        $missingDataIni = $ts_cursor;
        echo 'New hole: ' . $ts_cursor->timezone($tz)->toAtomString() . "<br/>";
    }
}