Merge to arrays in PHP (2D)

i need to merge an 2d array, if possible without any loops. Is there any way to use those 2 Arrays:

$array1 = array(
    0 => array('LABEL' => 'Label1'),
    1 => array('LABEL' => 'Label2'),
    2 => array('LABEL' => 'Label3'),
);

$array2 = array(
    0 => array('LABEL' => 'Label1'),
    1 => array('LABEL' => 'Label2'),
    2 => array('LABEL' => 'Label4'),
);

and get this result:

$result = array(
    0 => array('LABEL' => 'Label1'),
    1 => array('LABEL' => 'Label2'),
    2 =>开发者_开发百科 array('LABEL' => 'Label3'),
    3 => array('LABEL' => 'Label4'),
);

$result = array_merge($array1, $array2);

And if you want no double results in the array, you could use the multidimensional array save function from the PHP comments here: http://www.php.net/manual/de/function.array-unique.php#97285