Youtube Api Authsub+iphone+php

Hello
please help me regarding to iphone web service i can deveop in php
my problem as follow

i develop one iphone app
user register my app
than login my app
see youtube logo first time click give login screen user enter his youtube username and password than user uplod video on youtube,search video etc..

please help me how can i use youtube api because zend youtube client libs is depricated so i use authsub.

i get token from iphone side but how to use to retrive or uplod video i dont know


please help me.