PHP warning

Trying to access array offset on value of type bool

/home4/qwqgbgmy/public_html/khmerfree/protected/controllers/SiteController.php(506)

494                         $related_videos = $connection->createCommand("select * from video where video.id in (".$video_ids.") order by video.id DESC")->queryAll();
495                     }
496                 }
497                 $content_groups = $connection->createCommand("select * from content_group where content_group.training_course_id=".$training_course['id']." order by content_group.order")->queryAll();
498                 $new_content_groups = array();
499                 foreach($content_groups as $content_group):
500                     $content_lists = $connection->createCommand("select content_list.id, content_list.name,content_list.link, video.id as video_id, video.src from content_list left join video on(content_list.id = video.content_list_id) where content_list.content_group_id=".$content_group['id']." order by content_list.order")->queryAll();
501                     $content_group['content_list'] = $content_lists;
502                     $new_content_groups[] = $content_group;
503                 endforeach;
504             }
505             //setting meta property for facebook
506             Yii::app()->clientScript->registerMetaTag($training_course['title'], null, null, array('property' => "og:title"));
507             $des = strip_tags(str_replace(' ', '', $training_course['des']));
508             Yii::app()->clientScript->registerMetaTag($des, null, null, array('property' => "og:description"));
509             Yii::app()->clientScript->registerMetaTag('website', null, null, array('property' => "og:type"));
510             Yii::app()->clientScript->registerMetaTag('http://khmerfree.com/images/training courses/'.$training_course['image'], null, null, array('property' => "og:image"));
511             $this->render('/site/view_training_by_id', array('video'=>$video,'training_course'=>$training_course,'content_groups'=>$new_content_groups,'related_videos'=>$related_videos,'id'=>$id));
512         }        
513     }
514     public function actionBook(){/** list all book */
515         $connection = Yii::app()->db;
516         if(Yii::app()->request->isAjaxRequest){                
517             /**
518              * start generate start and limit_point for pagination

Stack Trace

#9
+
 /home4/qwqgbgmy/public_html/khmerfree/index.php(13): CApplication->run()
08 defined('YII_DEBUG') or define('YII_DEBUG',true);
09 // specify how many levels of call stack should be shown in each log message
10 defined('YII_TRACE_LEVEL') or define('YII_TRACE_LEVEL',3);
11 
12 require_once($yii);
13 Yii::createWebApplication($config)->run();
2024-03-29 06:25:23 Apache Yii Framework/1.1.14