Exercise in arrays

<?php

$foo = [0 => 'foo', '1' => 'foo', '02' => 'foo'];
$bar = [0 => 'bar', '1' => 'bar', '02' => 'bar'];

$wat = array_merge($foo, $bar);
$kek = $foo + $bar;
var_dump($wat);
var_dump($kek);