Use the wfGetDB function in response.php to retrieve the data (i.e. articles) from the database.
... $theDoc->updateTitle(); ... public function updateTitle() { $dbr = wfGetDB( DB_SLAVE ); $theData = array(); $theData['title'] = $this->title; $theWhere = array('id='.$this->uid); $dbr->update('page_make_up', $theData,$theWhere); $dbr->commit(); } ...