如何在仍然知道原始索引的同时在PHP中对数组进行洗牌？

Question

How do you shuffle a PHP array while still knowing the original index?

I have a simple array in PHP (e.g. ["a", "b", "c", [5, 10]]).

The shuffle() function allows you to shuffle the elements.

However I still wish know what the original index was. How can I do this?

Answer 1

See shuffle doc 2nd example:

<?php
    function shuffle_assoc(&$array) {
        $keys = array_keys($array);

        shuffle($keys);

        foreach($keys as $key) {
            $new[$key] = $array[$key];
        }

        $array = $new;

        return true;
    }