read xml

I convert a php project to Yii project.

So it has an xml with the users.

So I decide to use simplexml to read this file at login script.

Where is the best folder to save it and how to read it?

I save it at views but it did not work.

Yii::import ('application.views.admin');

  $rss =  simplexml_load_file('my_xml_file.xml');

Edit:I put the file at the root of my application.

$rss =  simplexml_load_file('admin/my_xml_file.xml');

I don’t remember precisely, but probably the directory where the berkdb is normally stored, that should be data/, isn’t it?