3v4l.org

run code in 300+ PHP versions simultaneously
<?php function x($n) { for($i = 1; $i <= $n; $i++) { $n % $i == 0 && $i != $n ? $f[]=$i & echo("$i ") : 0; } array_sum($f) == $n ? printf('P') : printf('I'); } x(28);
Output for 5.4.0 - 5.4.12
Parse error: syntax error, unexpected 'echo' (T_ECHO) in /in/5B94A on line 4
Process exited with code 255.
Output for 5.3.0 - 5.3.22
Parse error: syntax error, unexpected T_ECHO in /in/5B94A on line 4
Process exited with code 255.
preferences:
188.63 ms | 1395 KiB | 43 Q