用php合并数组并重命名键答案

【问题标题】：merge array & rename key with php用php合并数组并重命名键
【发布时间】：2015-12-28 03:43:50
【问题描述】：

我有以下两个对象数组：
第一个数组： $array1

        Array
(
    [0] => Array
        (
            [match] => 1
            [when] => 2013-10-13 15:00:00
            [a] => AD
            [b] => NiP
            [winner] => c
            [closed] => 1
            [event] => Fragbite Masters
            [format] => 3
        )

    [1] => Array
        (
            [match] => 2
            [when] => 2013-10-13 15:00:00
            [a] => VG
            [b] => AD
            [winner] => a
            [closed] => 1
            [event] => Starseries
            [format] => 5
        )

    [2] => Array
        (
            [match] => 3
            [when] => 2013-10-13 21:15:00
            [a] => Serbia
            [b] => Portugal
            [winner] => a
            [closed] => 1
            [event] => ESEC
            [format] => 1
        )

)

第二个数组： $array2

    Array
(
    [0] => Array
        (
            [match] => 1
            [a] => 58
            [b] => 107
        )

    [1] => Array
        (
            [match] => 2
            [a] => 174
            [b] => 162
        )

    [2] => Array
        (
            [match] => 3
            [a] => 64
            [b] => 59
        )

)

我想要这样的东西：

    Array
(
    [0] => Array
        (
            [match] => 1
            [when] => 2013-10-13 15:00:00
            [a] => AD
            [b] => NiP
            [winner] => c
            [closed] => 1
            [event] => Fragbite Masters
            [format] => 3
            [per_a] => 58
            [per_b] => 107
        )

    [1] => Array
        (
            [match] => 2
            [when] => 2013-10-13 15:00:00
            [a] => VG
            [b] => AD
            [winner] => a
            [closed] => 1
            [event] => Starseries
            [format] => 5
            [per_a] => 174
            [per_b] => 162
        )

    [2] => Array
        (
            [match] => 3
            [when] => 2013-10-13 21:15:00
            [a] => Serbia
            [b] => Portugal
            [winner] => a
            [closed] => 1
            [event] => ESEC
            [format] => 1
            [per_a] => 64
            [per_b] => 59
        )

)

第二个数组中的键名[a] 和[b] 已修改为[per_a] 和[per_b]。

我尝试合并两个文件的事情：
array_merge 和 array_merge_recursive：两者都给我一个结果，其中 $array2 的合并值附加到末尾$array1.
array_combine：不起作用，因为 $array1 和 $array2 的元素数量不相等。

这只是每个文件的一部分，两者在元素方面并不相等。如果您对我有答案，将不胜感激！提前谢谢！

【问题讨论】：

标签： php arrays json merge

【解决方案1】：

试试这个你需要修改你的按键功能。见Demo

$match ：将检查两个数组中是否存在密钥。 $whereKey1
$whereKey2 ：从第二个数组中取出值并将其放入您的 $newkey1 和 $newkey2 的新密钥

function key_compare_func($arr1, $arr2)
{
    $newarray = array();
    $match = "match";
    $whereKey1 = "a";
    $whereKey2 = "b";
    $newKey1 = "per_a";
    $newKey2 = "per_b";

    if(is_array($arr1) && is_array($arr2)){
        if($arr1[$match] == $arr2[$match] ){
            $newarray = array_merge($arr1, array($newKey1 => $arr2[$whereKey1], $newKey2 => $arr2[$whereKey2]));
        }
    }
  return $newarray;
}

$modifiedArray = array_map("key_compare_func",$A1, $A2);
echo '<pre>';print_r($modifiedArray);echo '</pre>';

输出：

[0] => Array
        (
            [match] => 1
            [when] => 2013-10-13 15:00:00
            [a] => AD
            [b] => NiP
            [winner] => c
            [closed] => 1
            [event] => Fragbite Masters
            [format] => 3
            [per_a] => 58
            [per_b] => 107
        )

    [1] => Array
        (
            [match] => 2
            [when] => 2013-10-13 15:00:00
            [a] => VG
            [b] => AD
            [winner] => a
            [closed] => 1
            [event] => Starseries
            [format] => 5
            [per_a] => 174
            [per_b] => 162
        )

【讨论】：

哇……干得好！你是男人，谢谢！整洁、清晰、快速！