检索一个月内所有特定日期

Question

我试图在过去的特定日期之后用Carbon检索所有星期一和星期二以及每个月的最后一个星期日。 然后我想循环一整天，为那一天创造一个偶数。我试图找出如何做到这一点？

// Get all dates of Mondays, Tuesdays, last Sundays of every Month since the first Monday of January of 2000.
$eventDates = Carbon::parse('first Monday of January 2000');

$i = 0;
while($eventDates->lt(Carbon::now()->subDay(14))) {

    $event = factory(Event::class)->create([
        'date' => $eventDate,
    ]);
}

Answer 1

我确信有更高效的方法可以做到这一点，但我对Carbon并不熟悉。在这里，您将获得3个阵列，每个阵列包含自2000年以来每个星期一，星期二和每个月的最后一个星期日。然后，您可以迭代每个DatePeriod，或合并间隔以获得一个大DatePeriod，创建你的活动。

<?php
use Carbon\Carbon;
use Carbon\CarbonInterval;
$monday = Carbon::parse('First Monday of January 2000');
$tuesday = Carbon::parse('First Tuesday of January 2000');
$sunday = Carbon::parse('Last Sunday of January 2000');
$now = Carbon::now();
$mondays = new DatePeriod(
    $monday,
    CarbonInterval::week(),
    $now
);
$tuesdays = new DatePeriod(
    $tuesday,
    CarbonInterval::week(),
    $now
);
$sundays = new DatePeriod(
    $sunday,
    CarbonInterval::week(4),
    $now
);

$allDays = [];
foreach ($mondays as $day) {
    $allDays[] = $day;
}
foreach ($tuesdays as $day) {
    $allDays[] = $day;
}
foreach ($sundays as $day) {
    $allDays[] = $day;
}
usort($allDays, function ($a, $b) {
    return strtotime($a) - strtotime($b);
});
foreach ($allDays as $day) {
    echo $day->format("M D Y-m-d")."<br>";
}

Answer 2

您可以在日期期间使用Carbon的filter()和isWeekday()方法：

$period = CarbonPeriod::between('2020-03-01', '2020-03-31')->filter('isWeekday');
foreach ($period as $date) {
  $days[] = $date->format('Y-m-d');
}
echo implode('<br>', $days);

这将打印出来

2020-03-02
2020-03-03
2020-03-04
2020-03-05
2020-03-06
2020-03-09
2020-03-10
2020-03-11
2020-03-12
2020-03-13
2020-03-16
2020-03-17
2020-03-18
2020-03-19
2020-03-20
2020-03-23
2020-03-24
2020-03-25
2020-03-26
2020-03-27
2020-03-30
2020-03-31

https://carbon.nesbot.com/docs/#api-period