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<?php /** * Class PeriodIterator * * @author Efimov Evgeniy <evgeniy.efimov@alpari.org> */ class PeriodIterator implements \Iterator { /** * Start date * * @var \DateTime */ private $startDate; /** * End date * * @var \DateTime */ private $endDate; /** * Iteration offset * * @var string */ private $offset; /** * Current iteration date * * @var \DateTime */ private $currentDate; /** * PeriodIterator constructor. * * @param \DateTime $startDate Start date * @param \DateTime $endDate End date * @param string $offset Offset for iteration */ public function __construct(\DateTime $startDate, \DateTime $endDate, $offset) { $this->startDate = $startDate; $this->endDate = $endDate; $this->offset = $offset; } /** {@inheritdoc} */ public function current() { return $this->currentDate; } /** {@inheritdoc} */ public function next() { $this->currentDate->modify($this->offset); } /** {@inheritdoc} */ public function key() { return $this->currentDate->getTimestamp(); } /** {@inheritdoc} */ public function valid() { return $this->currentDate->getTimestamp() <= $this->endDate->getTimestamp(); } /** {@inheritdoc} */ public function rewind() { $this->currentDate = clone $this->startDate; } } $workLoad = new PeriodIterator(new \DateTime('sunday last week'), new DateTime('last day of this month'), "1 day" ); $workLoad->rewind(); $secondPeriod = $workLoad->current(); echo $secondPeriod->format('Y-m-d H:i:s');
based on ggrjJ
Output for 5.3.22 - 5.4.45, 5.6.28, 7.0.20 - 7.2.0
2016-01-24 00:00:00
Output for 7.0.6
2016-05-15 00:00:00
Output for 7.0.5
2016-04-03 00:00:00
Output for 5.5.33, 5.6.19, 7.0.4
2016-03-06 00:00:00
Output for 5.5.32, 5.6.18, 7.0.3
2016-03-13 00:00:00
Output for 5.5.31, 5.6.17, 7.0.1 - 7.0.2
2016-03-20 00:00:00
Output for 5.5.30, 5.6.15 - 5.6.16, 7.0.0
2016-03-27 00:00:00
Output for 5.6.21
2016-05-01 00:00:00
Output for 5.5.34, 5.6.13 - 5.6.14, 5.6.20
2016-04-10 00:00:00
Output for 5.5.27 - 5.5.29, 5.6.12
2016-04-17 00:00:00
Output for 5.5.25 - 5.5.26, 5.6.8 - 5.6.11
2016-04-24 00:00:00
Output for 5.5.24, 5.5.35
2016-05-22 00:00:00