如何找到两个数组之间的差异

Question

Array
(
    [0] => Array
        (
            [0] => 4
            [1] => 1
            [2] => 3
        )

)
Array
(
    [c_id] => Array
        (
            [0] => 1
            [1] => 3
        )

) 

输出应为

Array
(
    [0] => 1
)