id_author; } public function set_id_author($id_author) { $this->id_author = $id_author; return $this; } public function get_replacement_id() { return $this->replacement_id; } public function set_replacement_id($replacement_id) { $this->replacement_id = $replacement_id; } public function get_class_author (){ $authority = new authority(0, $this->get_id_author(), AUT_TABLE_AUTHORS); return $authority->get_object_instance(); } }