echo $d->format('Y-m-d') . PHP_EOL;
}
// 2015-12-01
// 2015-12-02
// 2015-12-03
// 2015-12-04
// ...
// 2015-12-28
// 2015-12-29
// 2015-12-30
// 2015-12-31
## if you want to change interval, use setInterval()
$start = new DateTime('2012-12-01');
$end = new DateTime('2020-12-31');
$range = new DateRange([$start, $end]);
$range->setInterval(new DateInterval('P1Y'));
// change from 'P1D' (Default)
foreach ($range->getDatePeriod() as $d) {
echo $d->format('Y-m-d') . PHP_EOL;
}
// 2012-12-01
// 2013-12-01
// 2014-12-01
// 2015-12-01
// 2016-12-01
// 2017-12-01
// 2018-12-01
// 2019-12-01
// 2020-12-01
## try - catch
try {
/** @test */
public function changeInterval()
{
$range = new DateRange([$this->start, $this->end]);
$range->setInterval(new DateInterval('P1Y'));
$this->assertEquals(new DateInterval('P1Y'), $range->getInterval());
}