3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $dt = new DateTime('first Monday of this month'); echo $dt->format('W'); $month = "3"; $year = "2014"; $beg = (int) date('W', strtotime("first monday of $year-$month")); $end = (int) date('W', strtotime("last monday of $year-$month")); for($i = $beg; $i <= $end; ++$i) { print $i . "<br>"; }
based on BnZs3
Output for 5.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
4110<br>11<br>12<br>13<br>14<br>
Output for 5.2.0 - 5.2.17
Fatal error: Uncaught exception 'Exception' with message 'DateTime::__construct(): Failed to parse time string (first Monday of this month) at position 13 (o): The timezone could not be found in the database' in /in/qqbr2:3 Stack trace: #0 /in/qqbr2(3): DateTime->__construct('first Monday of...') #1 {main} thrown in /in/qqbr2 on line 3
Process exited with code 255.
Output for 5.0.0 - 5.1.6
Fatal error: Class 'DateTime' not found in /in/qqbr2 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.4.9
Fatal error: Cannot instantiate non-existent class: datetime in /in/qqbr2 on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: datetime in /in/qqbr2 on line 3