Game-Jaming/Backend/Controllers/Polls/GetWinner.php

<?php
require_once "../../../bootstrap.php";
require_once "../Admin/Admin.php";
use Backend\Models\Group;
use Backend\Models\Vote;
use \Illuminate\Support\Collection;

if(isAdmin() && isset($_GET['gameJamId'])){
    $groups = Group::where('game_jam_id',$_GET['gameJamId'])->get();
    $winningGroups = new Collection();
    $i = -1;
    foreach ($groups as $group){
        $x = Vote::where('group_id', $group->id)->count();
        if($x>$i){
            $winningGroups = new Collection();
            $winningGroups->push($group);

            $i = $x;
        }
        elseif ($i === $x){
            $winningGroups->push($group);
        }
    }

    header("Access-Control-Allow-Methods: GET");
    header("Access-Control-Allow-Headers: X-Requested-With, Content-Type, Accept");
    header('Content-Type: application/json;charset=UTF-8');
    echo json_encode(array('data' => $winningGroups->jsonSerialize()));


}else{
    echo http_response_code(401);
}