Loop through dates with PHP

Question

I am trying to loop through dates with PHP. Currently my code gets stuck in a loop repeating 110307. I need the date format to be in yymmdd. Here is what I was trying to use:

Answer 1

Here is part of a code I use, can probably be improved, depends on PHP version you use.

//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