3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = [1, 2, 3]; $bar = [4, 5, 6]; $merged = array_merge($foo, $bar);
Output for 7.3.0 - 7.3.28, 7.4.0 - 7.4.16, 8.0.0 - 8.0.3