Problem with DB connect function

[SimWhite]

The problem with the DB connection inside solusvmcontrol.php here:

function db_open()
{
    require_once(realpath(dirname(__FILE__) . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . 'configuration.php'));
    $conn = mysql_connect($db_host, $db_username, $db_password);
    mysql_select_db($db_name, $conn);
    return $conn;
}

..if you set mysql_connect credentials inside the $conn variable it will be working fine. Also the same problem inside hooks.php here:

    // Check if the product id has been activated in SVMC
    require_once(realpath(dirname(__FILE__) . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . 'configuration.php'));
    $conn = mysql_connect($db_host, $db_username, $db_password);
    mysql_select_db($db_name, $conn);
    $result = mysql_query("SELECT count(*) AS count FROM tblcustomfields WHERE relid = ".$vars['pid']." AND (fieldname = 'solusvm_server' OR  fieldname = 'solusvm_api_key' OR fieldname = 'solusvm_api_hash')");
    $real_result = mysql_fetch_assoc($result);
    if($real_result['count'] != 3) {
        $smarty->_tpl_vars["SVMC"]["enabled"] = false;
    }

The DB connect function must be changed to something like:

function db_open()
{
    require_once(realpath(dirname(__FILE__) . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . 'configuration.php'));
    $conn=mysqli_connect($db_host, $db_username, $db_password);
    mysqli_select_db($conn, $db_name);
    return $conn;
}