将两个数组合并为具有公共值的单个数组 [英] Combine two array in to single array with common value

问题描述

我试图用键值对两个数组进行Cobain运算很常见，但是我遇到一些逻辑问题：

I am trying to Cobain two array with value of key are common but I face some logical issue:

$array1 = array(
    array("id" => "1","name"=>"John"),
    array("id" => "2","name"=>"Peter"),
    array("id" => "3","name"=>"Tom"),
    array("id" => "12","name"=>"Astro")
);

$array2 = array(
    array("id" => "1","second_name"=>"Lim"),
    array("id" => "2","second_name"=>"Parker"),
    array("id" => "3","second_name"=>"PHP")
);

我的期望输出数组？

$result = array(
    array("id" => "1","name"=>"John","second_name"=>"Lim"),
    array("id" => "2","name"=>"Peter","second_name"=>"Parker"),
    array("id" => "3","name"=>"Tom","second_name"=>"PHP"),
    array("id" => "12","name"=>"Astro")
);

我尝试过

$arraycomb = array_unique(array_merge($array1,$array2), SORT_REGULAR);

我的输出是：

Array
(
    [0] => Array
        (
            [id] => 1
            [name] => John
        )

    [1] => Array
        (
            [id] => 2
            [name] => Peter
        )

    [2] => Array
        (
            [id] => 3
            [name] => Tom
        )

    [3] => Array
        (
            [id] => 12
            [name] => Astro
        )

    [4] => Array
        (
            [id] => 1
            [second_name] => Lim
        )

    [5] => Array
        (
            [id] => 2
            [second_name] => Parker
        )

    [6] => Array
        (
            [id] => 3
            [second_name] => PHP
        )

)

2。如何在同一数组中求取键值？或如何才能实现期望值？

2 . How Can I Cobain the key value inside same array? or How Can I bring the Expected out but?

注意：我正在尝试获取价值，而不是关键参考： PHP数组在同一键上合并两个数组

Note: I am trying for value instead of key ref:PHP Array Merge two Arrays on same key

推荐答案

您可以为此使用 array_map（）。试试这个-

You can use array_map() for this. Try this -

function modifyArray($a, $b)
{
    if (!empty($a) && !empty($b)) {
        return array_merge($a, $b);
    } else if (!empty($a) && empty($b)) {
        return $a;
    }  else if (empty($a) && !empty($b)) {
        return $b;
    }
}

$new = array_map("modifyArray", $array1, $array2);
var_dump($new);

如果第一个数组的元素为空，它将生成新数组，两个数组中的所有值都将生成那么第二个数组将被合并，反之亦然。

It will generate the new array will all the values in both arrays.if the first array's element is empty then the second array will be merged and vice-versa.

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