如何对多维数组中的所有列值求和？

如何通过关联键添加所有列值？请注意，键集是动态的。

输入数组：

Array ( [0] => Array ( [gozhi] => 2 [uzorong] => 1 [ngangla] => 4 [langthel] => 5 )

[1] => Array
    (
        [gozhi] => 5
        [uzorong] => 0
        [ngangla] => 3
        [langthel] => 2
    )

[2] => Array
    (
        [gozhi] => 3
        [uzorong] => 0
        [ngangla] => 1
        [langthel] => 3
    )

) 所需结果：

Array ( [gozhi] => 10 [uzorong] => 1 [ngangla] => 8 [langthel] => 10 ) 问题来源于stack overflow