3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array('1','2','3','4'); $b = array('4','5','6','7'); $c = array_merge($a,$b); var_dump(array_unique($c)); ?>
Output for 4.3.0 - 7.1.0
array(7) { [0]=> string(1) "1" [1]=> string(1) "2" [2]=> string(1) "3" [3]=> string(1) "4" [5]=> string(1) "5" [6]=> string(1) "6" [7]=> string(1) "7" }