public function insert_entry ($userid, $content) {
        print "Blogeintrag hinzufügen $userid";

        $statement = $this->db->prepare('INSERT INTO blogentrys (userid, content, created) VALUES (:userid,:content, :created)');
        $statement->execute(array('userid' => "$userid", 'content' => "$content", 'created' => time())); 

    }