function postBodyProcessor($parmBody) {
    return $parmBody;
}

function addPost($parmPost) {
    try {
        $stmt = DB()->prepare("INSERT INTO posts(title, body, userid, ipaddress, status) VALUES (?,?,?,?,?)");
        $stmt->execute(array(substr($parmPost->title, 0, POST_TITLE_LENGTH),
                                    postBodyProcessor($parmPost->body),
                                    $parmPost->userid,
                                    $parmPost->ipaddress,
                                    $parmPost->status));
        $parmPost->id = DB()->lastInsertId();               
        return new RequestHolder(new RequestStatus(RequestStatusConst::STATUS_OK, "Сообщение создано {$parmPost->id}!"), null, $parmPost);
    }
    catch(PDOException $e) {
        return exceptionRequestHolder(DBExceptionTxt($e->getMessage(), "addPost"));
    }
}

function DB() {
    global $dbhost, $dbname, $dbusername, $dbpassword;
    $db = new PDO("mysql:host={$dbhost};dbname={$dbname}", $dbusername, $dbpassword);
    $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    $db->exec("set names utf8");
    return $db;
}