将内部数组合并为一个

Question

我有这个用户ID数组。我想将子userid数组合并到父数组中的一个数组中。

[0] => Array
    (
        [0] => Array
            (
                [userid] => 1610
            )

        [1] => Array
            (
                [userid] => 1614
            )

        [2] => Array
            (
                [userid] => 1616
            )

    )

[1] => Array
    (
        [0] => Array
            (
                [userid] => 1610
            )

        [1] => Array
            (
                [userid] => 1614
            )

        [2] => Array
            (
                [userid] => 1616
            )

        [3] => Array
            (
                [userid] => 1618
            )

    )

我想要的结果看起来像...

[0] => Array
    (
        [userids] => Array
            (
                [0] => 1610
                [1] => 1614
                [2] => 1616
            )
)

[1] => Array
    (
        [userids] => Array
            (
                [0] => 1610
                [1] => 1614
                [2] => 1616
                [3] => 1618
            )
)

Answer 1

环绕数组，并使用array_column展平子数组。

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https://3v4l.org/A68VA