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run code in 150+ php & hhvm versions
Bugs & Features
<?php function x($n) { for($i = 1; $i <= $n; $i++) { if ($n % $i == 0 && $i != $n) { $factors[] = $i; echo "$i "; } } array_sum($factors) == $n ? printf(I) : printf(I); } x(28);
Output for 4.3.0 - 7.1.0
1 2 4 7 14 Notice: Use of undefined constant I - assumed 'I' in /in/3csHE on line 9 I