3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ['t1' => 'a', 't2' => 'b', 't3' => 'c']; $b = ['t1' => 'd', 't2' => 'e', 't3' => 'f']; print_r(array_merge($a, $b)); print_r(array_merge(array_values($a), array_values($b)));
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.26, 8.3.0 - 8.3.14, 8.4.1 - 8.4.2
Array ( [t1] => d [t2] => e [t3] => f ) Array ( [0] => a [1] => b [2] => c [3] => d [4] => e [5] => f )
preferences:
62.52 ms | 408 KiB | 5 Q