3v4l.org

run code in 300+ PHP versions simultaneously
<?php $n = array('E1', 'E2', 'E4','E5','E0','E9','E8'); natsort($n); print_r($n); reset($n); print_r($n); usort ($n , function($a,$b){ return strnatcmp($a,$b); }) print_r($n);
Output for 5.4.0 - 5.4.28
Parse error: syntax error, unexpected 'print_r' (T_STRING) in /in/Q8fgX on line 11
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_STRING in /in/Q8fgX on line 11
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/Q8fgX on line 10
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/Q8fgX on line 10
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/Q8fgX on line 10
Process exited with code 255.
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222.59 ms | 1395 KiB | 118 Q