1) Check the below website http://www.webservicex.net
2) What I need is to know how php can address a webservice and get information from xml files.
3) You can try currency converter webservice, or weather, or country codes.

“how to use php and XML in order to talk to webservices and get results.”

In other words, I want a php file that sends for example two variables (e.g. USD, EGP) to the xml webservice, and you get in a the next php file the results 5.514
Check the demo in this page, scroll down till you see the two fields http://www.webservicex.net/WCF/Servi...ls.aspx?SID=18

Fetch the URL with file_get_contents and then parse with SimpleXMLElement. Give that a shot and post your code if you get stuck.