Connection to external database

Question

I created a database on 000webhost and created a PDO connection to access it from my localhost in vertrigo

<?php
//CONSTANTES
define('HOST', 'databases.000webhost.com');
define('USUARIO', 'meuusuario');
define('SENHA', 'minhasenha');
define('DB', 'id1342846_central');

// FUNÇÃO DE CONEXÃO
function conecta() {
    $dns = "mysql:host=" . HOST . ";dbname=" . DB;

    try {
        $conn = new PDO($dns, USUARIO, SENHA);
        $conn -> setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
        return $conn;
    } catch(PDOException $erro) {
        echo $erro -> getMessage();
    }

}
?>

however the connection is denied and presenting the following information SQLSTATE[HY000] [2002] No connection the p to be made because the target corner actively refused them. there is some way to connect me to this database externally ?