3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $dte = new DateTime(date('Y-m-d H:i:s')); var_dump($dte->format('Y-W')); $dte->modify('+4 weeks'); var_dump($dte->format('Y-m-d H:i:s -- Y_W r')); $dte->modify('+1 days'); var_dump($dte->format('Y-m-d H:i:s -- Y_W r'));
Output for 5.2.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(7) "2012-49" string(62) "2012-12-31 14:04:40 -- 2012_01 Mon, 31 Dec 2012 14:04:40 +0100" string(62) "2013-01-01 14:04:40 -- 2013_01 Tue, 01 Jan 2013 14:04:40 +0100"
Output for 5.0.0 - 5.1.6
Fatal error: Class 'DateTime' not found in /in/OQXeZ on line 2
Process exited with code 255.
Output for 4.3.2 - 4.4.9
Fatal error: Cannot instantiate non-existent class: datetime in /in/OQXeZ on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: datetime in /in/OQXeZ on line 2