在PHP中将当前月份拆分为几周

Question

我想将当前月份分为几周,比如第一天到周六,然后是周日到下周六.对于前者:对于五月份,所以我想把它分开

2016-05-01 to 2016-05-07
2016-05-08 to 2016-05-14
2016-05-15 to 2016-05-21
2016-05-22 to 2016-05-28
2016-05-29 to 2016-05-31

如果我尝试下面的代码,我没有得到确切的结果.

<?php

$start_date = date('Y-m-d', strtotime('2016-06-01'));
$end_date = date('Y-m-d', strtotime('2016-06-30'));
$i=1;
for($date = $start_date; $date <= $end_date; $date = date('Y-m-d',       strtotime($date. ' + 7 days'))) {
    echo getWeekDates($date, $start_date, $end_date, $i);
    echo "\n";
    $i++;
}

function getWeekDates($date, $start_date, $end_date, $i) {
    $week =  date('W', strtotime($date));
    $year =  date('Y', strtotime($date));

    $from = date("Y-m-d", strtotime("{$year}-W{$week}+1")); 
    if($from < $start_date) $from = $start_date;

    $to = date("Y-m-d", strtotime("{$year}-W{$week}-7"));   
    if($to > $end_date) $to = $end_date;

    echo $from." - ".$to.'<br>';    
}

?>

我喜欢

2016-05-01 - 2016-05-01
2016-05-01 - 2016-05-08
2016-05-08 - 2016-05-15
2016-05-15 - 2016-05-22
2016-05-22 - 2016-05-29

在for循环中,在检查最后一组天时,conditon失败.所以它不计算30,31.

我怎样才能做到这一点？

Answer 1

DateTime、DatePeriod 和 DateInterval 是您快速完成此操作的朋友！

网上看看。

<?php
/**
 * @file
 * Awnser to http://stackoverflow.com/q/37224961/392725
 *
 * @link http://stackoverflow.com/a/37228497/392725
 */
date_default_timezone_set('Europe/Paris');

function getWeekDates(DateTimeInterface $date, $format = 'Y-m-d') {
  $dt        = \DateTimeImmutable::createFromMutable($date);
  $first_day = $dt->modify('first day of this month');
  $last_day  = $dt->modify('last day of this month');
  $period    = new \DatePeriod(
    $first_day,
    \DateInterval::createFromDateString('sunday this week'),
    $last_day,
    \DatePeriod::EXCLUDE_START_DATE
  );

  $weeks = [$first_day->format($format)];
  foreach ($period as $d) {
    $weeks[] = $d->modify('-1 day')->format($format);
    $weeks[] = $d->format($format);
  }
  $weeks[] = $last_day->format($format);

  return array_chunk($weeks, 2);
}

echo "Weeks of the current month:\n";
$weeks = getWeekDates(new \DateTime('now'));
array_walk($weeks, function ($week) {
  vprintf("%s to %s\n", $week);
});

echo "\nWeeks of the month may 2016:\n";
$weeks = getWeekDates(new \DateTime('2016-05'));
array_walk($weeks, function ($week) {
  vprintf("%s to %s\n", $week);
});

echo "\nWeeks of the month june 2016:\n";
$weeks = getWeekDates(new \DateTime('2016-06'));
array_walk($weeks, function ($week) {
  vprintf("%s to %s\n", $week);
});

echo "\nWeeks of the month october 2016:\n";
$weeks = getWeekDates(new \DateTime('2016-10'));
array_walk($weeks, function ($week) {
  vprintf("%s to %s\n", $week);
});

结果：

Weeks of the current month:
2016-05-01 to 2016-05-07
2016-05-08 to 2016-05-14
2016-05-15 to 2016-05-21
2016-05-22 to 2016-05-28
2016-05-29 to 2016-05-31

Weeks of the month may 2016:
2016-05-01 to 2016-05-07
2016-05-08 to 2016-05-14
2016-05-15 to 2016-05-21
2016-05-22 to 2016-05-28
2016-05-29 to 2016-05-31

Weeks of the month june 2016:
2016-06-01 to 2016-06-04
2016-06-05 to 2016-06-11
2016-06-12 to 2016-06-18
2016-06-19 to 2016-06-25
2016-06-26 to 2016-06-30

Weeks of the month october 2016:
2016-10-01 to 2016-10-01
2016-10-02 to 2016-10-08
2016-10-09 to 2016-10-15
2016-10-16 to 2016-10-22
2016-10-23 to 2016-10-29
2016-10-30 to 2016-10-31