3v4l.org

run code in 300+ PHP versions simultaneously
<?php print_r(array_column([['key'=>'val1'],['key'=>'val2']), 'key');
Output for 5.4.0 - 5.4.27
Parse error: syntax error, unexpected ')', expecting ']' in /in/Z1bQh on line 2
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected '[', expecting ')' in /in/Z1bQh on line 2
Process exited with code 255.
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