从多维数组中取消设置所有id键

Question

如何从多维数组中取消设置名为id的所有键？

private function remove_id(Array &$arr){
    foreach($arr as $key => $value){
        if($key == 'id'){
            unset($arr[$key]);
        }
        elseif(is_array($value)){
            $this->remove_id($value);
        }
    }
}

阵列

Array
(
    [id] => 52453
    [periods] => Array
        (
            [0] => Array
                (
                    [id] => 95296
                    [is_readonly] => 0
                    [year] => 2016
                    [month] => 1
                )

            [1] => Array
                (
                    [id] => 95297
                    [is_readonly] => 0
                    [year] => 2016
                    [month] => 2
                )

            [2] => Array
                (
                    [id] => 95298
                    [is_readonly] => 0
                    [year] => 2016
                    [month] => 3
                )

            [3] => Array
                (
                    [id] => 95299
                    [is_readonly] => 0
                    [year] => 2016
                    [month] => 4
                )

            [4] => Array
                (
                    [id] => 95300
                    [is_readonly] => 0
                    [year] => 2016
                    [month] => 5
                )

            [5] => Array
                (
                    [id] => 95301
                    [is_readonly] => 0
                    [year] => 2016
                    [month] => 6
                )

            [6] => Array
                (
                    [id] => 95302
                    [is_readonly] => 0
                    [year] => 2016
                    [month] => 7
                )

            [7] => Array
                (
                    [id] => 95303
                    [is_readonly] => 0
                    [year] => 2016
                    [month] => 8
                )

            [8] => Array
                (
                    [id] => 95304
                    [is_readonly] => 0
                    [year] => 2016
                    [month] => 9
                )

            [9] => Array
                (
                    [id] => 95305
                    [is_readonly] => 0
                    [year] => 2016
                    [month] => 10
                )

            [10] => Array
                (
                    [id] => 95306
                    [is_readonly] => 0
                    [year] => 2016
                    [month] => 11
                )

            [11] => Array
                (
                    [id] => 95307
                    [is_readonly] => 0
                    [year] => 2016
                    [month] => 12
                )

        )

    [closing_profit_amount] => 0
    [closing_profit_net_amount] => 0
)

Answer 1

您需要在&value循环中使用for来保持嵌套数组的更改。

此外，数组不能超过1个id键，因此无需在循环中检查它，这样可以进行一些微优化：

private function remove_id(Array &$arr){
    if(isset($arr['id'])) {
        unset($arr['id']);
    }
    foreach($arr as &$value){
        if(is_array($value)){
            $this->remove_id($value);
        }
    }
}