Call funktion query() laver en error hvordan ratter jeg den?

Nogle som kan hjælpe mig med min fejl. Kan ikke finde ud af hvad jeg skal gøre for at ratte den.

Fejl kode:: Fatal error: Call to a member function query() on a non-object in insert.php on line 19



<?php
include("..//func.php");
DB::Conn("open");

if (isset($_POST['submit'])) { // if form has been submitted

    if (!$_POST['username'] | !$_POST['password'] | !$_POST['password_validation'] | !$_POST['email']) {
        die('You did not fill in a required field.');
    }

    // check if username exists in database.

    if (!get_magic_quotes_gpc()) {
        $_POST['username'] = addslashes($_POST['username']);
    }

    $name_check = $db_object->query("SELECT username FROM webhosteu_users WHERE username = '".$_POST['username']."'");

    if (DB::isError($name_check)) {
        die($name_check->getMessage());
    }

    $name_checkk = $name_check->numRows();

    if ($name_checkk != 0) {
        die('Sorry, the username: <strong>'.$_POST['username'].'</strong> is already taken, please pick another one.');
    }

    // check passwords match

    if ($_POST['password'] != $_POST['password_validation']) {
        die('Passwords did not match.');
    }

    // check e-mail format

    if (!preg_match("/.*@.*..*/", $_POST['email']) | preg_match("/(<|>)/", $_POST['email'])) {
        die('Invalid e-mail address.');
    }

    // no HTML tags in username, website, location, password

    $_POST['username'] = strip_tags($_POST['username']);
    $_POST['password'] = strip_tags($_POST['password']);

    // now we can add them to the database.
    // encrypt password

    $_POST['password'] = md5($_POST['password']);

    if (!get_magic_quotes_gpc()) {
        $_POST['password'] = addslashes($_POST['password']);
        $_POST['email'] = addslashes($_POST['email']);
    }



    $regdate = date('d m, Y');

    $insert = "INSERT INTO webhosteu_users (
            username,
            password,
            regdate,
            email)
            VALUES (
            '".$_POST['username']."',
            '".$_POST['password']."',
            '$regdate',
            '".$_POST['email']."'
            )";

    $add_member = $db_object->query($insert);

    if (DB::isError($add_member)) {
        die($add_member->getMessage());
    }

    $db_object->disconnect();
?>


<h1>Registered</h1>

<p>Thank you, your information has been added to the database, you may now <a href="login.php" title="Login">log in</a>.</p>

<?php
}?>