download and upload facebook profile photo

I`m new in API field.

How can I log in facebook 开发者_如何学Pythonand download\upload profile picture with php?

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There is a excelent Pear Package http://pear.php.net/package/Services_Facebook

and also have a look at the developers wiki of facebook

http://wiki.developers.facebook.com/index.php/PHP

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I can't answer to the download part, but you are unable to upload a profile photo through Facebooks's API. You'd have to hack around it... fake login etc but I expect that would be very difficult.