public static function removeTags($tags, $classify_type)
{
if (empty($tags)) {
return;
}
$count = Tag::find()->where(['name' => $tags, 'classify_type' => $classify_type])->one();
if (isset($count) && !empty($count)) {
$count->frequency -= 1;
$count->save();
Tag::deleteAll('frequency<=0');
}
//$criteria=new CDbCriteria;
//$criteria->addInCondition('name',$tags);
//$this->updateCounters(array('frequency'=>-1),$criteria);
//$this->deleteAll('frequency<=0');
}