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run code in 300+ PHP versions simultaneously
<?php function x($n){for($i=1;$i<$n;$i++){$n%$i?:$f[]=$i;}return(array_sum($f)==$n)}x(28);
Output for 5.3.0 - 5.3.22, 5.4.0 - 5.4.12
Parse error: syntax error, unexpected '}' in /in/oTinJ on line 1
Process exited with code 255.

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174.13 ms | 1395 KiB | 43 Q