<?php
class Database {
    public $hostname;
    public $username;
    public $password;
    public $database;
    public $dblink;

    public function connect() {
        $this->dblink = mysql_connect($this->hostname,$this->username,$this->password) or die("Could not connect. ");
        mysql_select_db($this->database, $this->dblink) or die("Could not select database.");
    }
}

$db = new Database();

$db->hostname = 'localhost';
$db->username = 'root';
$db->password = '1234';
$db->database = 'blog';
$db->connect();

if ($db->connect()) {
    print("Connected to $db->hostname!");
}

else {
    print("Not connected to $db->hostname!");
}

?>