use strings to access (potentially large) multidimensional arrays

Question

I am having trouble figuring out a way to simply parse a string input and find the correct location within a multidimensional array.

I am hoping for one or two lines

Answer 1

How about

$vars = array(
    'one' => array(
        'one-one' => "hello",
        'one-two' => "goodbye"
    ),
    'two' => array(
        'two-one' => "foo",
        'two-two' => "bar"
    )
);

function get( $string, $vars )
{
    $keys = explode( '][', substr( $string, 1, -1 ) );
    foreach( $keys as $key ) {
        $vars = $vars[$key];
    }
    return $vars;
}

echo get( '[two][two-one]', $vars );