二维数组删除值的问题

Question

Array
(
    [0] => Array
        (
            [0] => 1
            [1] => 2
            [2] => 3
            [3] => 4
            [4] => 5
            [5] => 6
        )    [1] => Array
        (
            [0] => 7
            [1] => 8
            [2] => 9
            [3] => 0
            [4] => 3
            [5] => 2
        ))如何用一句话 删除 例如上面数组中[0][1] 和 [1][1]得到Array
(
    [0] => Array
        (
            [0] => 1
            
            [2] => 3
            [3] => 4
            [4] => 5
            [5] => 6
        )    [1] => Array
        (
            [0] => 7
           
            [2] => 9
            [3] => 0
            [4] => 3
            [5] => 2
        ))

Answer 1

unset($a[0][1]);
unset($a[1][1]);

Answer 2

+
也可以：
array_shift($a[0][1])
array_shift($a[1][1])

Answer 3

无语唉... 现在的人!!!unset 写成2条和一条有区别嘛??

Answer 4

unset($a[$i][1]）我意思是怎么能代替这个$i