make UniqFilter

<?php

namespace App\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;

use Symfony\Component\HttpFoundation\JsonResponse;

use Symfony\Component\HttpFoundation\Response;

use Symfony\Component\Routing\Attribute\Route;

use Symfony\Component\HttpFoundation\Request;

use function App\Repository\uniqElements;

class UniqElementsController extends AbstractController

{

    #[Route('/uniq/elements', name: 'app_uniq_elements')]

    public function index(Request $request): Response

    {

        $requestArray = $request->toArray();

        $return = uniqElements($requestArray);

        return new JsonResponse($return, Response::HTTP_OK);

    }

}

<?php

namespace App\Repository;

/**

 * Удалить дубликаты, оставив только уникальные значения

 * @param array $array

 * @return array

 */

function uniqElements(array $array): array {

    $splitedArray = [];

    foreach ($array as $tuple) {

        $key = $tuple[0];

        $item = $tuple[1];

        $splitedArray[$key][] = $item;

    }

    $returnableArray = [];

    foreach ($splitedArray as $key => $item){

        $item = array_unique($item);

        foreach ($item as $oneOfItem){

            $returnableArray[] = [

                $key,

                $oneOfItem

            ];

        }

    }

    return $returnableArray;

}