PHP5 Date Iterator
December 10th, 2009
I’ve recently had cause to iterate through ranges of dates, either Weekly, Monthly or Daily and for some reason there isn’t really a good default way to do this. So I wrote my own. This is a pretty basic implementation of an iterator but it serves its without too much fuss.
class Date_Iterator implements Iterator {
private $increment;
private $startDate;
private $endDate;
private $currentDate;
private $iterations = 0;
/**
*
* @param string $increment Anything that strtotime can understand. eg. day, week, month, year
* @param int|string $startDate
* @param int|string $endDate
* @return
*/
function __construct($increment, $startDate, $endDate) {
$this->increment = $increment;
if(is_int($startDate)) {
$this->startDate = $startDate;
} else {
$this->startDate = strtotime($startDate);
}
if(is_int($endDate)) {
$this->endDate = $endDate;
} else {
$this->endDate = strtotime($endDate);
}
$this->currentDate = $this->startDate;
}
function current() {
return date("d-M-Y", $this->currentDate);
}
function next() {
$current = date("d-M-Y", $this->currentDate);
$this->currentDate = strtotime($current." + 1 ".$this->increment);
$this->iterations ++;
}
function valid() {
return $this->currentDate < = $this->endDate;
}
function rewind() {
$this->currentDate = $this->startDate;
}
function key() {
return $this->iterations;
}
}