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run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = (array)(object)['a', 'b']; var_dump(array_keys($a));
Output for 5.4.0 - 5.6.30, hhvm-3.10.1 - 3.17.3, 7.0.0 - 7.2.0
array(2) { [0]=> int(0) [1]=> int(1) }
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/EJfcE on line 2
Process exited with code 255.