如何在PHP中移动具有已知数组键权重的数组元素？

因为一个相当琐碎的问题而头脑僵硬。如果我从这样的数组开始：

$my_array = array(
    1  => [
        "id" => 1,
        "weight" => 0
    ],
    2  => [
        "id" => 2,
        "weight" => -1
    ],
    3  => [
        "id" => 3,
        "weight" => 0
    ],
    4  => [
        "id" => 4,
        "weight" => -1
    ],
);

$my_array = array(
    1  => [
        "id" => 2,
        "weight" => -1
    ],
    2  => [
        "id" => 1,
        "weight" => 0
    ],
    3  => [
        "id" => 4,
        "weight" => -1
    ],
    4  => [
        "id" => 3,
        "weight" => 0
    ],
);

我将执行一个函数，将数组中的键移动到key+“weight”。所以结果可能是这样的：

$my_array = array(
    1  => [
        "id" => 1,
        "weight" => 0
    ],
    2  => [
        "id" => 2,
        "weight" => -1
    ],
    3  => [
        "id" => 3,
        "weight" => 0
    ],
    4  => [
        "id" => 4,
        "weight" => -1
    ],
);

$my_array = array(
    1  => [
        "id" => 2,
        "weight" => -1
    ],
    2  => [
        "id" => 1,
        "weight" => 0
    ],
    3  => [
        "id" => 4,
        "weight" => -1
    ],
    4  => [
        "id" => 3,
        "weight" => 0
    ],
);

---

做这件事最有效的方法是什么？

如果它能帮助一些人，这里是函数

function reorder_array(&$my_array) {   
  foreach ($my_array as $key => $object) {
        $move = $object['weight'];
        $arr = $my_array;
        if ($move == 0 || !isset($arr[$key])) {
          continue;
        }
        $i = 0;
        foreach($arr as &$val){
          $val = array('sort' => (++$i * 10), 'val' => $val);
        }
         $arr[$key]['sort'] = $arr[$key]['sort'] + ($move * 10 + ($key == $key ? ($move < 0 ? -5 : 5) : 0));

        uasort($arr, function($a, $b) {
          return $a['sort'] > $b['sort'];
        });
        foreach($arr as &$val) {
          $val = $val['val'];
        }
        $my_array = $arr;
      }
}

函数重新排序_数组（&$my_数组）{
foreach（$key=>$object的my_数组）{
$move=$object['weight']；
$arr=$my_数组；
如果（$move==0 | |！isset（$arr[$key]））{
继续；
}
$i=0；
外汇（$arr as和$val）{
$val=array（'sort'=>（++$i*10），'val'=>$val）；
}
$arr[$key]['sort']=$arr[$key]['sort']+（$move*10+（$key==$key？（$move<0？-5:5）：0））；
uasort（$arr，函数（$a，$b）{
返回$a['sort']>$b['sort']；
});
外汇（$arr as和$val）{
$val=$val['val']；
}
$my_数组=$arr；
}
}

---

钥匙是否需要更换？还是说这是合理的？我看到您将

重量

更改为

位置

介于两者之间。因此，

array\u map

和

usort

的组合应该可以做到这一点。是的，很抱歉我忘记了一些编辑，我做了一个更好的示例，我只能在更简单的情况下更改顺序，感谢这些函数，我将看看我能做些什么。请开始使用简短的数组语法

[]

。没有必要改用

array（）