class DocumentUserRepository extends EntityRepository
{
    public function findByUserAccountDocument(array $users, $account, $document)
    {
        return $this->createQueryBuilder('a')
            ->andWhere('a.user IN (:users)')->setParameter('users', $users)
            ->andWhere('a.account = :account')->setParameter('account', $account)
            ->andWhere('a.document = :document')->setParameter('document', $document)
            ->getQuery()->getResult();
    }
}

$str1 = '(56.61926920000001, 84.88168339999993):8';
$str2 = '56.61926920000001, 84.12';
$str3 = '56.61926920000001, 84';

preg_match_all('/([\d]*[.][\d]*)/', $str1, $matches);
print_r($matches[1]);
// [0] => 56.61926920000001
// [1] => 84.88168339999993

preg_match_all('/([\d]*[.][\d]*)/', $str2, $matches);
print_r($matches[1]);
// [0] => 56.61926920000001
// [1] => 84.12

preg_match_all('/([\d]*[.][\d]*)/', $str3, $matches);
print_r($matches[1]);
// [0] => 56.61926920000001

$regex = "([а-яА-Яa-zA-Z0-9]*|[.,-_!?;:'\(\)\"]*)";
        $string = "МАЗ 5551 - популярный белорусский грузовик-самосвал, с самосвальным оборудованием. Он выпускается на минском автомобильном заводе!";
        preg_match_all("/$regex/", $string, $matches);
        $matches = $matches[1];
        array_walk($matches,  function ($value, $key) use (&$matches) {
            if(strlen($matches[$key]) < 1) {
                unset($matches[$key]);

            }
        });
        echo '<pre>';
        print_r($matches);