/**
* @return DatePeriodDateTime[]
*/
protected function getPeriods()
{
if (!$this->periods) {
foreach ($this->period as $datetime) {
$start = new DateTime($datetime);
$end = (clone $start)->add($this->period->getDateInterval());
// we truncate end date to end date of period if needed
if ($end->getTimestamp() > $this->period->getEndDate()->getTimestamp()) {
$end = new DateTime($this->period->getEndDate());
}
$this->periods[] = new DatePeriodDateTime($start, $end);
}
// we remove end date if needed
if ($this->includeEndDate == false && $this->periods[sizeof($this->periods) - 1]->getEndDate()->getTimestamp() == $this->period->getEndDate()->getTimestamp()) {
array_pop($this->periods);
}
}
return $this->periods;
}
/**
* @param DatePeriod $period
* @param ItemInterface[] $items
* @param $xFormat
* @param $yFormat
* @return array
*/
public static function composeGrid(DatePeriod $period, $items, $xFormat, $yFormat)
{
$grid = [];
/** @var DateTime $date */
foreach ($period as $date) {
$nextDate = clone $date;
$nextDate->add($period->getDateInterval());
$cell = new GridCell($date);
foreach ($items as $item) {
$ts = (int) $item->getTimestamp();
if ($ts >= $date->getTimestamp() && $ts < $nextDate->getTimestamp()) {
$cell->addItem($item);
}
}
$grid[$date->format($xFormat)][$date->format($yFormat)] = $cell;
}
return $grid;
}
<?php
$period = new DatePeriod(new DateTime("2015-01-01"), new DateInterval("PT6H"), new DateTime("2015-01-02"));
$period->getStartDate()->modify("+7 days");
// Make sure we got clone right
$period->getEndDate()->modify("+7 days");
echo 'Starting Date = ', $period->getStartDate()->format('Y-m-d'), PHP_EOL;
echo 'Ending Date = ', $period->getEndDate()->format('Y-m-d'), PHP_EOL;
echo 'Interval = ', $period->getDateInterval()->format('%H hours'), PHP_EOL;
<?php
$start = new DateTime('2000-01-01 00:00:00', new DateTimeZone('Europe/Berlin'));
$end = new DateTime('2000-01-31 00:00:00', new DateTimeZone('UTC'));
$interval = new DateInterval('P1D');
$period = new DatePeriod($start, $interval, $end);
var_dump($period->getStartDate()->format('Y-m-d H:i:s'));
var_dump($period->getStartDate()->getTimeZone()->getName());
var_dump($period->getEndDate()->format('Y-m-d H:i:s'));
var_dump($period->getEndDate()->getTimeZone()->getName());
var_dump($period->getDateInterval()->format('%R%y-%m-%d-%h-%i-%s'));
