มีปัญหาเกี่ยวกับ msql กับ database มันไม่ยอมอัพเดท T^T

public function getnewPassword() {
	if(!get_magic_quotes_gpc()) {
            $this -> sanitizeInput();
        } 
        extract($_POST);
		echo print_r($_POST);
        $qry = "SELECT *FROM users WHERE userName = '$name'";
			
        $rs = $this -> db -> query($qry);
        
		if($rs) {
            
            if($rs -> num_rows > 0) {
                $row = $rs -> fetch_assoc();
			    $dbmail = $row['userEmail'];
				$userID = $row['userID'];
                //generate the new password
				if($email == $dbmail){		
					$pass = rand();
					$pass1 = md5($pass);
					$pass2 = substr($pass,0,15);
					$userPassword = md5(md5("kjfiufj".$pass."kjfiufj"));
					//update the database with the new pass
						$qry1 = "UPDATE users SET userPassword = '$userPassword',userName = '$name' WHERE userID = '$userID' ";
						echo $qry1;	
						if($rs) {
							if($this -> db -> affected_rows > 0) {
								   $msg = '<br />Comment record updated.';
							} else {
								   $msg = '<br />No coomment updated.';
							}            
						} else {
							echo 'Error updating comment';    
						}
				}