根据键数组获取数组的子集 [英] Get a subset of an array based on an array of keys

问题描述

我编写了这个函数来获取数组的一个子集.php 是否有一个内置的功能.我在文档中找不到一个.如果我重新发明轮子，这似乎是一种浪费.

I wrote this function to get a subset of an array. Does php have a built in function for this. I can't find one in the docs. Seems like a waste if I'm reinventing the wheel.

function array_subset($array, $keys) {
    $result = array();
    foreach($keys as $key){
        $result[$key] = $array[$key];
    }
    return $result;
}

推荐答案

array_diff_key 和 array_intersect_key 可能就是你想要的.

array_diff_key and array_intersect_key are probably what you want.

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