PHP Get value from config array

Question

I have a config.php file that looks like this

return array(
\"array1\"=>
    array(
      \"array2\"=>\"value\"
    )
);

How can I dy

Answer 1

$path  = 'array1.array2';
$value = array_reduce(
    explode('.', $path),
    function (array $value, $key) { return $value[$key]; },
    $config
);