3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $today = date("d"); // Current day $month = date("m"); // Current month $year = date("Y"); // Current year $start = date("w", mktime(0,0,0,$month,1,$year)); echo $start;
Output for 4.3.0 - 7.1.0
1