3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array(0 => 1, 1 => 2, 0 => 3); var_dump($a); $x = array(0 => 1, 1 => 2); $y = array(0 => 5, 2 => 3); $z = array_merge($x,$y); var_dump($z);
Output for 4.3.0 - 7.1.0
array(2) { [0]=> int(3) [1]=> int(2) } array(4) { [0]=> int(1) [1]=> int(2) [2]=> int(5) [3]=> int(3) }