访问对象的单个属性[重复]

Question

Possible Duplicate:
SimpleXML Reading node with a hyphenated name

I am pulling some data for a gaming tournament through an API on this page - http://www.sandwichmuffin.com/muffinleague/

I have been able to access some of the properties seen in the output of the print_r function, for example, to echo the tournament name I simply used

echo $tournaments->tournament[0]->name;

However I am having difficulty doing the same for the 'description-source'. Is there a different way to go about echoing this particular property? Pretty much everything I've tried has resulted in a 0, or false, by my understanding.

Edit: They claim that this (http://challonge.com/api/tournaments) is the format of the XML returned from my API query, if that helps.

Answer 1

$tournaments->tournament[0]->{"description-source"}