3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = 10; $y = [$x, &$x]; ++x; var_dump($y);
Output for 5.4.0 - 5.4.20
Parse error: syntax error, unexpected ';', expecting :: (T_PAAMAYIM_NEKUDOTAYIM) in /in/DUWgS on line 4
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected '[' in /in/DUWgS on line 3
Process exited with code 255.
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285.05 ms | 1399 KiB | 57 Q