阵列和关联阵列合并 [英] Array and Associative Array Merge

问题描述

我如何实现合并Array1和Array2的第三个数组? 用PHP做到这一点的最佳方法是什么?非常感谢. Array2具有相似的索引(键)，即Array1中id的关联值.

How can I achieve the third array, merging Array1 and Array2? What's the best way to do that in PHP? Many thanks. Array2 has like index (key), the associative value of id in Array1.

Array1

Array
(
    [0] => Array
    (
        [id] => 56
        [grade] => 6.7
    )
    [1] => Array
    (
        [id] => 214
        [grade] => 3.2
    )
)

Array2

Array
(
    [56] => 2.4
    [214] => 5.8 
)

想要结果

Array
(
    [0] => Array
    (
        [id] => 56
        [grade] => 2.4
    )
    [1] => Array
    (
        [id] => 214
        [grade] => 5.8
    )
)

推荐答案

foreach($array1 as &$arrayItem) {
$arrayItem['grade'] = $array2[$arrayItem['id']]
}

在这里您将按照需要合并数组1

Here you will have array 1 merged as you wished

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