login in a webpage using php

hi,
i want login in a page using the php
how can i do that?
thanks for your help

 

look up curl if you want to login into an existing site (facebook,gmail, whoever)
or did you want to create a login for a site?

 

hi,
no i want login into a existing site
i have found some samples but they only show how send data,post,get etc
to that site, login into that site is other history...
have you some sample that show how can i login and automate some operations
in that site? like fill forms and submit?
thanks a lot for your help

 

here's a video tutorial on using PHP curl to login to a website.

http://scriptasy.com/php_11/tutorial-curl-login_44.html