我使用DateTime::creaeFromFormat从星期数创建日期时间。但是它总是返回false。
$date = DateTime::createFromFormat('Y-W-d','2019-45-09');
var_dump($date);
输出:
bool(false)
解决方案:
$date = (new DateTime())->setISODate($year,$week,$day)->setTime($hour,$minute,$second,$microseconds);