3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array(1,2,2,1,1); $b = array("1"=>1,"2"=>1); echo array_unique($a);
Output for 5.4.0 - 7.1.0
Notice: Array to string conversion in /in/c2A1u on line 6 Array
Output for 4.3.0 - 5.3.29
Array