- strtotime: documentation ( source)
<?php
/**
* Workaround for date period iteration under php 5.2
*
* @author pgorbach <pgorbach@goodgamestudios.com>
* @package publishers
* @version $Id$
*/
class GgsDatePeriod implements Iterator
{
/**
* @var \DateTime
*/
protected $current;
/**
* @var \DateTime
*/
protected $start;
/**
* @var \DateTime
*/
protected $end;
/**
* @var string
*/
protected $interval;
/**
* @todo replace this class by build in php class DatePeriod
*
* @param \DateTime $start
* @param string $interval
* @param \DateTime $end
* @param int $options
*/
public function __construct($start, $interval, $end, $options = 0)
{
$this->start = $start;
$this->end = $end;
$this->interval = $interval;
$this->current = clone($start);
}
/**
* (PHP 5 >= 5.0.0)<br/>
* Return the current element
*
* @link http://php.net/manual/en/iterator.current.php
* @return mixed Can return any type.
*/
public function current()
{
return $this->current;
}
/**
* (PHP 5 >= 5.0.0)<br/>
* Move forward to next element
*
* @link http://php.net/manual/en/iterator.next.php
* @return void Any returned value is ignored.
*/
public function next()
{
$this->current->modify($this->interval);
}
/**
* (PHP 5 >= 5.0.0)<br/>
* Return the key of the current element
*
* @link http://php.net/manual/en/iterator.key.php
* @return mixed scalar on success, or null on failure.
*/
public function key()
{
return strtotime($this->current()->format('Y-m-d'));
}
/**
* (PHP 5 >= 5.0.0)<br/>
* Checks if current position is valid
*
* @link http://php.net/manual/en/iterator.valid.php
* @return boolean The return value will be casted to boolean and then evaluated.
* Returns true on success or false on failure.
*/
public function valid()
{
return $this->current() <= $this->end;
}
/**
* (PHP 5 >= 5.0.0)<br/>
* Rewind the Iterator to the first element
*
* @link http://php.net/manual/en/iterator.rewind.php
* @return void Any returned value is ignored.
*/
public function rewind()
{
$this->current = clone($this->start);
}
}
$startDateTime = new DateTime('2010-01-01');
$endDateTime = new DateTime('2010-08-01');
$period = new GgsDatePeriod($startDateTime, 86400, $endDateTime);
foreach ($period as $iterDate) {
echo $iterDate->format('Y-m-d');
}