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run code in 300+ PHP versions simultaneously
<?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 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
1 2 4 7 14 Fatal error: Uncaught Error: Undefined constant "I" in /in/3csHE:9 Stack trace: #0 /in/3csHE(12): x(28) #1 {main} thrown in /in/3csHE on line 9
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
1 2 4 7 14 Warning: Use of undefined constant I - assumed 'I' (this will throw an Error in a future version of PHP) in /in/3csHE on line 9 I
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33
1 2 4 7 14 Notice: Use of undefined constant I - assumed 'I' in /in/3csHE on line 9 I

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