Open an xml file in parser

1

Hi i just learned this code:

And I wondered is there any way to show an xml file using a link. Instead of it having to do this:

$xml_file = “blabla.xml”

Can I have a way to show this xml file:
http://www.elorating.com/ranking-services/ratingquery?mode=SP&laddertype=5&game=2&showtop=10&clan=fλŕ
This gets updated regularly so I dont have to copy it and change it regularly.

Thanks for your help!