3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function x($n){echo"$n's\x20Factors:\x20";for($i=1;$i<=$n;$i++){if($n%$i==0&&$i!=$n){$factors[]=$i;echo"$i\x20";}}if($n==array_sum($factors)){echo"[Perfect]";}else{echo"[Imperfect]";}}x(42);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
42's Factors: 1 2 3 6 7 14 21 [Imperfect]