implementing DB Class

<?phpfunction __autoload($classname) { require_once('includes/'.$class_name.'.class.php'); }class news {	function __toString() {		print '<div id="'.$this->id.'"><h1>'.$this->title.'</h1> by <i>'.$this->author.'</i>';		print '<br />';		print '<pre>'.$this->body.'</pre></div>';	}}$db = new DB();$news = $db->execute('SELECT * FROM news');$news->handler('news');foreach($news as $post)	print $post;?>