import user contacts form google, yahoo, and AOL in php

I search through the internet around whole week but could not find a good resources to import user contacts form google, yahoo, and AOL like main mail accounts. Actually I am expecting a php implementation to do this. when I search I found some people hav开发者_如何学JAVAe suggested third party app. But here I am looking for some my own app for import users contact book. Please any one can help me to do this or give me some idea to that.

You access the contacts data through APIs:

http://code.google.com/apis/contacts/

http://developer.yahoo.com/social/contacts/

AOL does not have one currently

If you want a paid solution (that does all three) there is CloudSponge: http://www.cloudsponge.com/