PHP - 删除多维数组元素但保留值

Question

我有一个像这样的数组

Array
(
[place0] => stdClass Object
    (
        [foods] => stdClass Object
            (
                [data] => Array
                    (
                        [0] => stdClass Object
                            (
                                [id] => 1390794747912097
                            )

                        [1] => stdClass Object
                            (
                                [id] => 1620226508192375
                            )

                        [2] => stdClass Object
                            (
                                [id] => 399421393563221
                            )

                        [3] => stdClass Object
                            (
                                [id] => 1611940965687753
                            )

                    )

            )

    )

[place1] => stdClass Object
    (
        [foods] => stdClass Object
            (
                [data] => Array
                    (
                        [0] => stdClass Object
                            (
                                [id] => 699879946787937
                            )

                        [1] => stdClass Object
                            (
                                [id] => 1434488970184270
                            )

         )

            )

    )
)

如何提取ID并将它们分类到新数组中，或者只删除[place0] - ＆gt; foods-＆gt; [data]和[place1] - ＆gt; foods-＆gt; [data]并合并它们？ 理想情况下，我不想循环遍历阵列的每个部分，但这是唯一的方法吗？

Answer 1

$c = array_merge_recursive($a->foods->data,$b->foods->data);
$c = array_map(function ($&a) {return $a=$a->id;},$c);

罗马的一种方式......