3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $startOfWeek = '16-07-2017'; $endOfWeek = new DateTime($startOfWeek); var_dump($endOfWeek); $endOfWeekString = $endOfWeek->modify('+5 day')->format('d-m-Y'); function firstDayOfWeek($date) { $day = DateTime::createFromFormat('d-m-Y', $date); $day->setISODate((int)$day->format('o'), (int)$day->format('W'), 1); return $day->format('d-m-Y'); } var_dump(firstDayOfWeek($startOfWeek)); echo $endOfWeekString;
Output for 5.6.30, hhvm-3.15.4 - 3.22.0, 7.0.0 - 7.3.0rc3
object(DateTime)#1 (3) { ["date"]=> string(26) "2017-07-16 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } string(10) "10-07-2017" 21-07-2017