Fixes Channels deprecated part "invideoPromotion"

Author: tambait

src/Youtube.php

@@ -309,7 +309,7 @@ public function getChannelByName($username, $optionalParams = false)
         $API_URL = $this->getApi('channels.list');
         $params = array(
             'forUsername' => $username,
-            'part' => 'id,snippet,contentDetails,statistics,invideoPromotion'
+            'part' => 'id,snippet,contentDetails,statistics'
         );
         if ($optionalParams) {
             $params = array_merge($params, $optionalParams);
@@ -329,7 +329,7 @@ public function getChannelById($id, $optionalParams = false)
         $API_URL = $this->getApi('channels.list');
         $params = array(
             'id' => $id,
-            'part' => 'id,snippet,contentDetails,statistics,invideoPromotion'
+            'part' => 'id,snippet,contentDetails,statistics'
         );
         if ($optionalParams) {
             $params = array_merge($params, $optionalParams);
@@ -348,7 +348,7 @@ public function getChannelsById($ids = array(), $optionalParams = false)
         $API_URL = $this->getApi('channels.list');
         $params = array(
             'id' => implode(',', $ids),
-            'part' => 'id,snippet,contentDetails,statistics,invideoPromotion'
+            'part' => 'id,snippet,contentDetails,statistics'
         );
         if($optionalParams){
             $params = array_merge($params, $optionalParams);
@@ -583,7 +583,7 @@ public function decodeList(&$apiData)
         } else {
             $this->page_info = array(
                 'resultsPerPage' => $resObj->pageInfo->resultsPerPage,
-                'totalResults'   => $resObj->pageInfo->totalResults,
+                'totalResults'   => isset($resObj->pageInfo->totalResults) ? $resObj->pageInfo->totalResults : null,
                 'kind'           => $resObj->kind,
                 'etag'           => $resObj->etag,
                 'prevPageToken'     => null,