public function update_channel($count)
{
$mod = new ActivityModule();
$cha = new ChannelModule();
$talks = $mod->get_ended_activity(RECENT_TALK_CHANNEL, $count);
foreach ($talks as $act) {
$cha->remove_activity(RECENT_TALK_CHANNEL, $act->id);
}
$acts = $mod->get_ended_activity(RECENT_ACTIVITY_CHANNEL, $count);
foreach ($acts as $act) {
$cha->remove_activity(RECENT_ACTIVITY_CHANNEL, $act->id);
}
return !(count($talks) <= 0 && count($acts) <= 0);
}