Google Analytics PHP API (GAPI) non-mobile browsers -

i trying display top 5 of non-mobile browsers gapi. can't seem find way of doing this, possible?
how percentage of mobile visits:

$ga->requestreportdata(ga_profile_id, array("ismobile"), array("visits"), '-visits', null, $startdate, $enddate); foreach ($ga->getresults() $result) {      if ((string)$result == "yes") $mobile["yes"] = $result->getvisits();     else $mobile["no"] = $result->getvisits();  } 

this how ended doing it:

public function getdevices($max = 5) {     $this->ga->requestreportdata($this->profileid, array('mobiledeviceinfo'), array('visits'), '-visits', 'mobiledeviceinfo != (not set) && mobiledeviceinfo != (not provided)', $this->startdate, $this->enddate, 1, $max);     foreach ($this->ga->getresults() $result) {         $device[] = (string)$result;         $visits[] = $result->getvisits();     }     if (!isset($device) or !isset($visits)) {         $device[] = "niet genoeg data beschikbaar";         $visits[] = "0";     }     $return = array("device" => $device, "visits" => $visits);     return $return; }