PHP Merger Array from Function’s Result

I have a function and the result is array. After print_r($result) here’s the array :

Array
(
    [0] => Array
        (
            [id_jabatan] => 3
            [keterangan_jabatan] => Direktur Utama
            [posisi] => Direktur
            [parent_id] => 0
        )
)
Array
(
    [0] => Array
        (
            [id_jabatan] => 4
            [keterangan_jabatan] => Direktur YMFK
            [posisi] => Direktur
            [parent_id] => 3
        )
)

The result from the function is 2 difference array. How to merge this all array into :

Array
(
    [0] => Array
        (
            [id_jabatan] => 3
            [keterangan_jabatan] => Direktur Utama
            [posisi] => Direktur
            [parent_id] => 0
        )
    [1] => Array
        (
            [id_jabatan] => 4
            [keterangan_jabatan] => Direktur YMFK
            [posisi] => Direktur
            [parent_id] => 3
        )
)

I have try array_merge but it didn’t work. Any suggest?