Something

Class Qz {
	
	public $qzid;
	public $qsnum;
	public $qsid;
	public $qztitle;
	
	protected $questions;
	
	function __construct($qzid, $qsnum = 1) {
		if($this->is_qz($qzid, true)) {
			$this->qzid = $qzid;
		}
		$this->qztitle = Qz_Data::get_var("SELECT qz_title FROM qz_quizzes WHERE qzid = '$this->qzid'");
		$this->qsnum = $qsnum;
		$this->questions = Qz_Data::select('qsid, question', 'qz_questions', "qzid=$this->qzid", 'qsnum ASC');
		$this->qsid = $this->question($this->$qsnum)->qsid;
	}

.....

Class Qz_Data {

	function __call($method, $args) {
		$db = QzDB::get();
		return $db->$method($args[0]);
	}
..... 



Fatal error: Call to undefined method Qz_Data::get_var() in /www/firas/lushlab/quizzical/functions.php on line 204