3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function sequence($n){ for($i = 1; $i < $n; $i ++) { print("(".$i.",".($n-$i).")"); } } sequence(4);
Output for 4.3.0 - 7.1.0
(1,3)(2,2)(3,1)