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run code in 200+ php & hhvm versions
Bugs & Features
<?php function x($n) { for($i = 1; $i <= $n; $i++) { $n % $i == 0 && $i != $n ? $factors[]=$i & printf("$i ") : 0; } array_sum($factors) == $n ? printf('P') : printf('I'); } x(28);
Output for 4.3.0 - 7.1.7
1 2 4 7 14 I