更改数组键而不更改顺序

You can "change" the key of an array element simply by setting the new key and removing the old:

您可以通过设置新密钥并删除旧密钥来“更改”数组元素的键：

$array[$newKey] = $array[$oldKey];
unset($array[$oldKey]);

But this will move the key to the end of the array.

但这会将键移动到数组的末尾。

Is there some elegant way to change the key without changing the order?

是否有一些优雅的方式来改变密钥而不改变顺序？

(PS: This question is just out of conceptual interest, not because I need it anywhere.)

（PS：这个问题仅仅是出于概念上的兴趣，不是因为我在任何地方都需要它。）

6 个解决方案

#1

Tested and works :)

经过测试和工作:)

$array = array( "a" => "1", "b" => "2", "c" => "3" );

function replace_key($array, $old_key, $new_key) {
    $keys = array_keys($array);
    if (false === $index = array_search($old_key, $keys)) {
        throw new Exception(sprintf('Key "%s" does not exit', $old_key));
    }
    $keys[$index] = $new_key;
    return array_combine($keys, array_values($array));
}

$new_array = replace_key($array, "b", "e");

6 个解决方案

#1

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