将单个对象转换为数组的函数？

const obj = { a: 1, b: 2, c: 3 };
const arr = Object.entries(obj);
console.log(arr); // [['a', 1], ['b', 2], ['c', 3]]

obj = {'a': 1, 'b': 2, 'c': 3}
arr = list(obj.items())
print(arr)  # [('a', 1), ('b', 2), ('c', 3)]

import java.util.HashMap;
import java.util.Map;
import java.util.ArrayList;
import java.util.List;

public class Main {
    public static void main(String[] args) {
        Map<String, Integer> obj = new HashMap<>();
        obj.put("a", 1);
        obj.put("b", 2);
        obj.put("c", 3);

        List<Object> arr = new ArrayList<>(obj.entrySet());
        System.out.println(arr); // [(a=1), (b=2), (c=3)]
    }
}

$obj = ['a' => 1, 'b' => 2, 'c' => 3];
$arr = [];
foreach ($obj as $key => $value) {
    $arr[] = [$key, $value];
}
print_r($arr); // Array ( [0] => Array ( [0] => a [1] => 1 ) [1] => Array ( [0] => b [1] => 2 ) [2] => Array ( [0] => c [1] => 3 ) )