3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = (array)((object)['a', 'b']); var_dump(array_keys($a));
Output for 5.4.0 - 7.1.0
array(2) { [0]=> int(0) [1]=> int(1) }
Output for 5.3.7 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/i31la on line 2
Process exited with code 255.