3v4l.org

run code in 300+ PHP versions simultaneously
<?php if (class_exists('DateTime')) { $date = new DateTime('2013-10-31'); $date->modify('-1 month'); print "2013-10-31, -1 month: {$date->format('m')}\n"; $date = new DateTime('2013-10-31'); $date->modify('first day of 1 month ago'); print "2013-10-31, first day of 1 month ago: {$date->format('m')}"; } else { print 'Not supported.'; }
Output for git.master, git.master_jit, rfc.property-hooks
2013-10-31, -1 month: 10 2013-10-31, first day of 1 month ago: 09

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:
28.55 ms | 401 KiB | 8 Q