php - simplexml_load_file() with non-standard XML file -

i'm having trouble using non-standard xml file simplexml_load_file(). here's code:

<?php $file = 'http://www.gostanford.com/data/xml/events/m-baskbl/2010/index.xml'; $xml = simplexml_load_file($file);  echo 'displaying user names of xml file...<br />'; foreach($xml $event_date){     echo 'home: '.$event_date->hn.'<br />'; }  ?> 

as you'll see, nothing being output xml file, echo'd "home:"

any appreciated.

this xml data, nothing non-standard it:

<game_days>    <event_date date="20101023">       <event id="1271699" local_time="6:00 pm pt" eastern_time="21:00" hc="stan" vc="" hn="stanford" vn="" hs="" vs=""/>    </event_date> 

the attribute looking 1 element level <event> below.
, access attributes use array syntax instead:

foreach($xml $event_date){     echo $event_date->event['hn'];