datetimecrap

<?php
	public function testGetMax52Weeks() {

		$d = new DateTime('2015-08-01 00:00:00');
		$date52WeeksAgo = $d->modify('-52 weeks');

		var_dump($date52WeeksAgo->format(DateTime::ISO8601));

		$dates =[];
		$dates[] = '2014-08-01 00:00:00';
		$dates[] = '2014-08-04 00:00:00';
		$dates[] = '2014-08-05 00:00:00';
		$dates[] = '2014-08-06 00:00:00';
		$dates[] = '2014-08-07 00:00:00';
		$dates[] = '2014-08-08 00:00:00';

		$indexClosest =null;
		$lowestInterval=-1;
		foreach($dates as $index => $date){
			if($indexClosest === null ) {
				$indexClosest = $index;

			}
			$interval =$date52WeeksAgo->diff(new DateTime($date))->format('%R%a')*1;
			if($interval >0 &&($lowestInterval <0 || $interval<$lowestInterval )){
				$lowestInterval = $interval;
				$indexClosest = $index;
			}

		}

		var_dump($dates[$indexClosest]);

		/**
		 * output
		 * string(24) "2014-08-02T00:00:00+0200"
		 * string(19) "2014-08-04 00:00:00"
		 */
	}