3v4l.org

run code in 300+ PHP versions simultaneously
<?php $year = '2015'; $date = '01/01/' . $year; $wk_baseline = date('w', strtotime($date)) - 1; $wkdate = '01/04/2015'; $week = ceil(max(date('z', strtotime($wkdate)) + 1 - $wk_baseline,0) / 7); echo $week; ?>
Output for git.master, git.master_jit, rfc.property-hooks
1

This tab shows result from various feature-branches currently under review by the php developers. Contact me to have additional branches featured.

Active branches

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page


preferences:
50.36 ms | 401 KiB | 8 Q