3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function x($n) { $z="printf"; for($i = 1; $i <= $n; $i++) { $n % $i == 0 && $i != $n ? $f[]=$i & $z("$i "): 0; } array_sum($f) == $n ? $z('P') : $z('I'); } x(28);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
1 2 4 7 14 I