Fatal error: Call to a member function query() on a non-object

[queerfm]

Hi i need to find out what this error is

Fatal error: Call to a member function query() on a non-object in /home/*****/public_html/beta/system/articals/artical.php on line 15

the code is

<?php
require_once("configuration.php");
$vconfig = new VConfig();

$dbData = new DBData("localhost","$vconfig->user","$vconfig->dbpass","$vconfig->db");


class DBData extends DBConnect{
        	
		public function title(){
			$result=$DBData->query('SELECT * FROM push_content');
			$row=$result->fetch_assoc();
			//echo user's password
			print $row['title'];
		   
		}
		
			
    }
    

?>

There is something wrong with this $result=$DBData->query('SELECT * FROM push_content');

but from what i have worked out its something wrong with the $result=$DBData->query

If any one can help that would be great.
Thanks

[onestopplay]

shouldn't it be mysql_query(SELECT....);

[queerfm]

Not when you are using OOP (object orientated Program)
You can use the old php way or the new OOP/OOD