Yii Implementation of Persistent DB Connections

EDIT: Seems to be a double of this post, written a moth ago.

Hi. Just my curiosity. CDbConnection->setPersistent() code in current implementation is:

public function setPersistent($value)


    return $this->setAttribute(PDO::ATTR_PERSISTENT,$value);


How this comes in conjunction with note in PHP documentation saying:

[s]Either I’m missing something or current implementation of setPresistent is using setAttribute, which is said to be invalid approach.