合并具有不同 levels/dimensions 的数组

Question

我有两个数组：

$array1:

Array
(
[0] => Array
    (
        [category] => Baggage
    )

[1] => Array
    (
        [category] => Camp Dues
    )

[2] => Array
    (
        [category] => Extended Care
    )

[3] => Array
    (
        [category] => Transportation
    )

[4] => Array
    (
        [category] => Trips
    )

[5] => Array
    (
        [category] => Tuition
    )

)

$array2:

Array
(
   [0] => Baggage
   [1] => Cancellation fee
   [2] => Extended Care
   [3] => Transportation
   [4] => Trips
   [5] => Tuition
)

我想做的是将两个数组组合起来，使其看起来像数组 2 查找并删除重复的类别并将数组按字母顺序排列。有什么方法可以与 array_merge 一起使用来完成这个吗？

Answer 1

这应该有效：

$array2 = array();
foreach($value in $array1){
    $array2[] = $value["category"];
}

Answer 2

Php 5+ 至 array_column

array_unique(array_merge(array_column($array1, "category"),$array2), SORT_REGULAR);

合并具有不同 levels/dimensions 的数组

Merging arrays with different levels/dimensions

php

arrays

multidimensional-array