PHP:Youtube API thumbnails.set -

whenever run 1 error saying

undefined property: google_youtubeservice::$thumbnails fatal error: call member function set() on non-object

$searchresponse= $youtube->thumbnails->set("videoid",array('mediaupload'=>$media, 'videoid'=>'cac2jyonesi')); 

what's wrong?

your call should like

$setresponse = $youtube->thumbnails->set("your_video_id", array('mediaupload' => $media));

besides that, may have initialized $youtube object wrong, check sample answer.

most using older version of client library, doesn't have thumbnails class in it. please download latest library here.