将键值对数组转换为关联数组 [英] Convert array of key-value pairs into associative array

问题描述

我目前有一个数组:

[1] => Array
    (
        [0] => 100011
        [1] => 1
    )

[2] => Array
    (
        [0] => 100013
        [1] => 1
    )

[3] => Array
    (
        [0] => 100022
        [1] => 1
    )

[4] => Array
    (
        [0] => 100025
        [1] => 1

我想获取每个数组(1、2、3、4等)的第一个子项(表示[0])，并将其放入新数组中.我知道我需要遍历并将值分配给新数组.只是不确定如何去做.

I want to take the first child item (meaning [0]) of each array (1,2,3,4,etc) and put it into a new array. I know I need to loop through and assign the value to new array. Just not sure how to do it.

最终结果将是:

$ final(新数组的名称)的值是100013、100022、100025等.

$final (name of new array) has values 100013,100022,100025,etc.

我的最终结果:

我需要将其保持相同的顺序，因为然后我将使用array array_combine ( array $keys , array $values )来创建100013作为键，并创建1作为值，100022作为键，1作为值，100025作为键，1作为价值.

I need it kept in the same order, because I am then going to use array array_combine ( array $keys , array $values ) to create 100013 as the key and 1 as the value, 100022 as the key, 1 as the value, 100025 as the key, 1 as the value.

如果您知道更快的完成方式，将不胜感激.

If you know a quicker way to accomplish, it is appreciated.

谢谢.

推荐答案

如果我理解正确，可以通过以下操作获得最终结果:

If I understand you right, the final result can be obtained by doing:

array_combine(array_column($arr, 0), array_column($arr, 1));

或者，以更传统的方式:

Or, in a more traditional way:

$result = [];
foreach ($arr as list($key, $value)) {
    $result[$key] = $value;
}

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