将单元素数组的数组转换为一维数组 [英] Convert array of single-element arrays to one a dimensional array

问题描述

我有这种数组:

Array
(
    [0] => Array
        (
            [0] => 88868
        )
    [1] => Array
        (
            [0] => 88867
        )
    [2] => Array
        (
            [0] => 88869
        )
    [3] => Array
        (
            [0] => 88870
        )
)

我需要将其转换为一维数组.我该怎么办?

I need to convert this to one dimensional array. How can I do that?

例如这样的..

Array
(
    [0] => 88868
    [1] => 88867
    [2] => 88869
    [3] => 88870 
)

任何内置的php功能都可用于此数组转换吗?

Any php built in functionality is available for this array conversion?

推荐答案

对于您有限的用例，可以这样做:

For your limited use case, this'll do it:

$oneDimensionalArray = array_map('current', $twoDimensionalArray);

当子数组中有许多条目时，可以更概括地说:

This can be more generalized for when the subarrays have many entries to this:

$oneDimensionalArray = call_user_func_array('array_merge', $twoDimensionalArray);

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