Laravel helpers:

Arr::crossJoin()


The Arr::crossJoin method cross joins the given arrays, returning a Cartesian product with all possible permutations:

use Illuminate\Support\Arr;
 
$matrix = Arr::crossJoin([1, 2], ['a', 'b']);
 
/*
    [
        [1, 'a'],
        [1, 'b'],
        [2, 'a'],
        [2, 'b'],
    ]
*/
 
$matrix = Arr::crossJoin([1, 2], ['a', 'b'], ['I', 'II']);
 
/*
    [
        [1, 'a', 'I'],
        [1, 'a', 'II'],
        [1, 'b', 'I'],
        [1, 'b', 'II'],
        [2, 'a', 'I'],
        [2, 'a', 'II'],
        [2, 'b', 'I'],
        [2, 'b', 'II'],
    ]
*/