Laravel collection transpose

transpose.php

// key will be 0,1,2,...
Collection::macro('transpose', function() {
    $items = array_map(function(...$items) {
        return $items;
    }, ...$this->values());

    return new self($items);
});

// transpose(['name', 'email'])
Collection::macro('transpose', function($keys = null) {
    $keys = $keys ?: range(0, $this->count() - 1);

    $items = array_map(function(...$items) use ($keys) {
        return array_combine($keys, $items);
    }, ...$this->values());

    return new self($items);
});