PHP nie pobiera danych z mysql

$pdo = new PDO('mysql:host=localhost;dbname=nazwa;charset=UTF-8', 'login', 'pass', array(PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES utf8"));
if (isset($_GET['lat'][0]) && isset($_GET['lng'][0]))
{
    switch ($_GET['type'])
    {
        case 1:
            $type = ' AND type = "Bankomaty PEKAO SA"';
            break;
        case 2:
            $type = ' AND type = "Bankomaty PKO BP"';
            break;
        case 3:
            $type = ' AND type = Bankomaty BZWBK';
            break;
        default:
            $type = '';
            break;
    }
    switch ($_GET['distance'])
    {
        case 1:
        case 5:
        case 10:
        case 20:
        case 50:
        case 100:
            $distance = $_GET['distance'];
            break;
        default:
            $distance = 10;
            break;
    }
    switch ($_GET['number'])
    {
        case 10:
        case 20:
        case 30:
            $number = ' LIMIT ' . $_GET['number'];
            break;
        case 0:
            $number = '';
            break;
        default:
            $number = ' LIMIT 10';
            break;
    }
    $query = 'SELECT *, acos(sin(radians(lat))*sin(radians(:lat))+cos(RADIANS(lat))*cos(radians(:lat))*cos(RADIANS(lng-:lng)))*6371 as distance 
FROM  `gps` 
    WHERE acos(sin(radians(lat))*sin(radians(:lat))+cos(RADIANS(lat))*cos(radians(:lat))*cos(RADIANS(lng-:lng)))*6371 < :distance' . $type . '
    ORDER BY distance asc ' . $number;
    $stmt = $pdo->prepare($query);
    $stmt->bindValue(':lat', $_GET['lat']);
    $stmt->bindValue(':lng', $_GET['lng']);
    $stmt->bindValue(':distance', $distance);
    $stmt->execute();
    echo json_encode($stmt->fetchAll(PDO::FETCH_ASSOC));
}

    switch ($_GET['distance'])
    {
        case 1:
        case 5:
        case 10:
        case 20:
        case 50:
        case 100:
            $distance = $_GET['distance'];
            break;
        default:
            $distance = 10;
            break;
    }

if (in_array($_GET['distance'], [1,5,10,20,50,100])) {
    $distance = $_GET['distance'];
}
else {
    $distance = 10;
}

$distance = (in_array($_GET['distance'], [1,5,10,20,50,100])) ? $_GET['distance'] : 10;