} //connect to database function connect() { $this->connect = mysql_connect($this->server, $this->user, $this->pass); if (!$this->connect) { die("connection can not be established"); } $db_select = mysql_select_db($this->database, $this->connect); if (!$db_select) { die("Database selection failed : " . mysql_error()); } } //ping to see whether the database has gone offline or not private function ping_db() { } //sanitize query to prevent sql-injection function sanitize_query($query) { } function close() { if (isset($this->connection)) { mysql_close($this->connection); } } } $val = new db_connect(); $val->set_var($server, $user, $pass, $database); $val->connect();