CODE EXAMPLE FOR PHP

laravel filter

<?php

namespace AppHttpControllers;

use AppUser;
use IlluminateHttpRequest;

class UserController extends Controller
{
    public function index(Request $request)
    {
        $users = User::where('is_active', true);

        if ($request->has('age_more_than')) {
            $users->where('age', '>', $request->age_more_than);
        }

        if ($request->has('gender')) {
            $users->where('gender', $request->gender);
        }

        if ($request->has('created_at')) {
            $users->where('created_at','>=', $request->created_at);
        }

        return $users->get();
    }
}