PHP database selection issue
<?php
$dbhost = "localhost";
$dbuser = "root";
$dbpass = "";
$dbname = "test";
?>

<?php
class Database {

    //-------------------------------------------
    //    Connects to the database
    //-------------------------------------------
    function connect() {
        if (isset($dbhost) && isset($dbuser) && isset($dbpass) && isset($dbname)) {
            $con = mysql_connect($dbhost, $dbuser, $dbpass) or die("Could not connect: " . mysql_error());
            $selected_db = mysql_select_db($dbname, $con) or die("Could not select test DB");
        }
    }// end function connect
} // end class Database
?>

<?php
// include the config file and database class
include 'config.php';
include 'database.php';

...
?>

<?php
// include the news class
include 'news.php';
// create an instance of the Database class and call it $db
$db = new Database;
$db -> connect();

class BLnews {

    function getNews() {
        $sql = "SELECT * FROM news";
        if (isset($sql)) {
            $result = mysql_query($sql) or die("Could not execute query. Reason: " .mysql_error());
        }
        return $result;
    }
?>

<?php
...

include 'includes/BLnews.php';
$blNews = new BLnews();
$news = $blNews->getNews();
?>

...
<?php
        while($row = mysql_fetch_array($news))
        {
        echo '<div class="post">';
        echo '<h2><a href="#"> ' . $row["title"] .'</a></h2>';
        echo '<p class="post-info">Posted by <a href="#"> </a> | <span class="date"> Posted on <a href="#">' . $row["date"] . '</a></span></p>';
        echo $row["content"];
        echo '</div>';
        }
        ?>