3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(array_keys(['person' => ['asdsa', 'asdasd']]);
Output for 5.4.0 - 5.4.23
Parse error: syntax error, unexpected ';' in /in/cDmUN on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected '[', expecting ')' in /in/cDmUN on line 3
Process exited with code 255.
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177.62 ms | 1395 KiB | 60 Q