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run code in 150+ php & hhvm versions
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<?php var_dump(array(false), array(['test', 1]), array([]));
Output for 5.4.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
array(1) { [0]=> bool(false) } array(1) { [0]=> array(2) { [0]=> string(4) "test" [1]=> int(1) } } array(1) { [0]=> array(0) { } }
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[', expecting ')' in /in/23o5K on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[', expecting ')' in /in/23o5K on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/23o5K on line 3
Process exited with code 255.