Shuffle inside array php

Question

how to shuffle arrays in array ? I tried lots of way but I can't achieve that. I think it's very simple but I'm stuck on that.

Array
(
    [2] => Array
        (
            [0] => 12011190
            [1] => 12011158
            [2] => 12011583
            [3] => 12012107
            [4] => 12011222
            [5] => 12010638
            [6] => 12013836
            [7] => 12012232
            [8] => 12011256
            [9] => 12010007
            [10] => 12012531
            [11] => 12012182
            [12] => 12013253
        )

    [6] => Array
        (
            [0] => 12011565
            [1] => 12010020
            [2] => 12011352
            [3] => 12014366
            [4] => 12011879
            [5] => 12011449
        )
)

I want to shuffle within arrays. I hope explain...

which value you want to shuffle and where?

Suresh Kamrushi
– Suresh Kamrushi

2013-01-18 14:15:20 +00:00
Commented Jan 18, 2013 at 14:15 — Suresh Kamrushi
– Suresh Kamrushi, Commented Jan 18, 2013 at 14:15

Louis Huppenbauer · Accepted Answer · 2013-01-18 14:25:27Z

9

As far as I know, you can do it like this (assuming you want to shuffle every sub-array independently):

foreach($array AS &$element) {
    shuffle($element);
}

Or maybe like this:

array_walk($array, function(&$value, $key) {
    shuffle($value);
});

edited Jan 18, 2013 at 14:25

answered Jan 18, 2013 at 14:16

Louis Huppenbauer

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1 Comment

Yasin Yörük Over a year ago

array_walk is suitable for me. Thanks for the response, But Vlad Preda's answer is better for my code. (Next answer)

Vlad Preda · Accepted Answer · 2013-01-18 14:34:44Z

0

Here is a recursive multi-level function you can use.

function shuffle_array($arr) {
    if (!is_array($arr)) return $arr;
    shuffle($arr);
    foreach ($arr as $key => $a) {
        if (is_array($a)) {
            $arr[$key] = shuffle_array($a);
        }
    }

    return $arr;
}

print_r(shuffle_array($array));

edited Jan 18, 2013 at 14:34

answered Jan 18, 2013 at 14:19

Vlad Preda

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1 Comment

Yasin Yörük Over a year ago

Thanks a lot. This one is my solution. You saved my day.

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