Enum case as Array key?

Description

Before enum exist, i used constant to define the array key. Now i want to use enum. But i got error when i declare the enum as array key. so i do the workaround like this:

if (!function_exists('_api')) {
    /**
     * use enum as Array Key.
     *
     * @param array $values
     * @param \App\Enums\Api\ResponseKey $key
     * @param mixed $data
     * @return array
     */
    function _api(?array &$values, ResponseKey $key, $data)
    {
        if (! is_array($values)) $values = [];

        $values[$key->value] = $data;

        return $values;
    }
}

Then call it like _api($data, ResponseKey::message, "success");

Can this workaround can be implemented as feature for future PHP?

未指定任何文件或测试。首先阅读 issue 讨论并检查 PHP enum 和 array-key 的行为，然后找到相关的语言实现和回归测试。完成这项工作需要达成一致的语言设计，并实现对预期 enum 键行为的覆盖。