Per request i got only 20 tickets

[gnanase]

Per request i got only 20 tickets in a project.

I use below function get only 20 tickets from that project and also open tickets only i got.

public function tickets($permalink) {
$url = '/'.$permalink.'/tickets?query=sort:status';
$xml = $this->object2array(simplexml_load_string($this->get($url),'SimpleXMLElement',LIBXML_NOCDATA));
return $xml['ticket'];
}

Can you explain how i get closed tickets in a project and specific period. example between month or year like that.