3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $array1 = array( 'a' => 1, 'b' => 2, ); $array2 = array( 'b' => 22, 'c' => 3, ); var_dump(array_merge($array1, $array2)); var_dump($array1 + $array2);
based on 8IlNM
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(3) { ["a"]=> int(1) ["b"]=> int(22) ["c"]=> int(3) } array(3) { ["a"]=> int(1) ["b"]=> int(2) ["c"]=> int(3) }