3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $ar = [1,2,3,3,3,1]; var_dump(array_unique($ar));
Output for 5.4.9 - 7.2.0
array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) }
Output for 5.3.19 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/oL8B6 on line 3
Process exited with code 255.