下面是我用的是代碼的一部分,或許可以得到改善,取決於你使用的PHP版本。
//usage
$Iterator=class Dates_DateIterator::factory('Daily',
new Datetime('20100227'),
new Datetime('20100324'));
foreach($Iterator as $i=>$day){
var_dump($i);
var_dump($day);
}
//code lib
abstract class Dates_DateIterator implements Iterator
{
/**
* Factory method, saves some code, also enable me to put everything in the same class
* as we use Autoload to load classes.
*/
static public function factory($cycle,DateTime $DateI,DateTime $DateII){
switch($cycle){
case 'Daily':
return new DaysIterator($DateI,$DateII);
case 'Weekly':
return new WeeksIterator($DateI,$DateII);
case 'Monthly':
return new MonthsIterator($DateI,$DateII);
case 'Yearly':
return new YearsIterator($DateI,$DateII);
default:
throw(new Exception('No valid cycle was chosen to iterate over'));
}
}
/**
* @var DateTime represents the start range.
*/
public $FromDate;
/**
* @var DateTime represents the end range.
*/
public $ToDate;
/**
* @var DateTime Current Date.
*/
protected $CurrentDate;
public function __construct(DateTime $DateI,DateTime $DateII)
{
if($DateII->format('U') > $DateI->format('U'))
{
$this->FromDate=$DateI;
$this->ToDate=$DateII;
$this->CurrentDate=$DateI;
}
else
{
$this->FromDate=$DateII;
$this->ToDate=$DateI;
$this->CurrentDate=$DateII;
}
}//EOF constructor
/**
* @return DateTime
*/
public function getClonedCurrent(){
return clone($this->CurrentDate);
}
public function current()
{
return $this->CurrentDate;
}//EOF current
public function currentDate()
{
return $this->CurrentDate->format('Ymd');
}//EOF current
public function rewind()
{
$this->CurrentDate=$this->FromDate;
}//EOF rewind
public function valid()
{
//Kill hours/minutes/seconds. If we are to add hours and minutes iterators, we will need to rethink this.
return (floor($this->CurrentDate->format('U')/(3600*24)) <= floor($this->ToDate->format('U')/(3600*24)));
}//EOF valid
}//EOF CLASS DateIterator
class DaysIterator extends SiTEL_Dates_DateIterator
{
public function __construct(DateTime $DateI,DateTime $DateII)
{
parent::__construct($DateI,$DateII);
}//EOF constructor
public function next()
{
$this->CurrentDate->modify('+1 day');
}//EOF next
public function key()
{
return $this->CurrentDate->format('d');
}//EOF key
}//EOD CLASS DaysIterator
什麼是PHP版本? – 2011-03-06 06:20:14
@Itay Moav:版本5.2.17。 – shinjuo 2011-03-06 06:23:11
然後而不是'modify('+ 1 day');'例如,你可以使用' - > add'方法。 – 2011-03-06 06:36:56