CODEWITHSUNDEEP
phparrays
P.Yntema
P.Yntema

Reputation: 607

Shuffle array key and values php

I want to randomly shuffle the keys and values of a php array. I've already found solution to shuffle the order, but I want to shuffle the keys and values themselves.

The array array('yes' => 'oui', 'no' => 'non', 'hello' => 'bonjour') would for example become array('oui' => 'yes, 'no' => 'non', 'bonjour' => 'hello'). Note that the first and last value have randomly swapped key and value.

I know you can use array_flip to flip the keys and values in an array. But this flips all keys and values, while I want to randomly flip a few keys and values. How would I do this?

Upvotes: 1

Views: 229

Answers (2)

yqlim
yqlim

Reputation: 7080

$array = array('yes' => 'oui', 'no' => 'non', 'hello' => 'bonjour');

// Run it in a foreach loop
foreach ($array as $key => $val){
    // rand(0, 1) will return either 0 or 1
    // It's up to you which value you want to set as anchor.
    if (rand(0, 1) === 0){
        // Set the value as key,
        // then set the key as value.
        $array[$val] = $key;

        // Delete the original one.
        unset($array[$key]);
    }
}

Upvotes: 1

Michał Szczech
Michał Szczech

Reputation: 456

$array = array('yes' => 'oui', 'no' => 'non', 'hello' => 'bonjour');

foreach($array as $key => $value) {
    if (0 === rand(0,1)) {
        $array[$value] = $key;
        unset($array[$key]);
    }
}

Upvotes: 1

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