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<?php declare(strict_types=1);
/*
* This file is part of the feed-io package.
*
* (c) Alexandre Debril <[email protected]>
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace FeedIo\Result;
use FeedIo\Feed\ItemInterface;
use FeedIo\FeedInterface;
class NextUpdate
{
private $intervals;
public function __construct(FeedInterface $feed)
$this->intervals = $this->computeIntervals($this->extractDates($feed));
}
private function computeIntervals(array $dates): array
rsort($dates);
$intervals = [];
$current = 0;
foreach ($dates as $date) {
if ( $current > 0) {
$intervals[] = $current - $date;
$current = $date;
return $intervals;
private function extractDates(FeedInterface $feed): array
$dates = [];
foreach ($feed as $item) {
$dates[] = $this->getTimestamp($item);
return $dates;
private function getTimestamp(ItemInterface $item): ? int
return $item->getLastModified()->getTimestamp();
alexdebril /
feed-io
