Вывод последних тем одного форума на сайт

//Open a new connection to the MySQL server
$mysqli = new mysqli('db_host','db_username','db_password','db_name');

//Output any connection error
if ($mysqli->connect_error) {
    die('Error : ('. $mysqli->connect_errno .') '. $mysqli->connect_error);
}

$forum_id = 1; //ID нужного форума
$limit = 10; //Количество выводимых тем

//MySqli Select Query
$results = $mysqli->query("SELECT subject, posted FROM topics WHERE forum_id = '$forum_id' ORDER BY posted DESC LIMIT '$limit'");

print '<table border="1">';
while($row = $results->fetch_assoc()) {
    print '<tr>';
    print '<td>'.$row["subject"].'</td>';
    print '<td>'.$row["posted"].'</td>';
    print '</tr>';
}
print '</table>';

// Frees the memory associated with a result
$results->free();

// close connection
$mysqli->close();