3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = ['a' => 1, 'b' => 2, 'c' => 3]; $bar = $foo + ['c' => 4, 'd' => 5, 'e' => 6]; var_dump($bar);

preferences:
23.83 ms | 404 KiB | 5 Q