Exception raised while trying to access facebook API with CodeIgniter

I am trying with Facebook API with codeigniter. While I am trying with get some basic information about the users like

$this->facebook->api('/me?fields=id,name,link,email,user_hometown,user_education_history,user_birthday&perms=publish_stream,create_event');

I am getting exception like

Exception: Unknown fields: user_hometown,user_education_history,u开发者_JAVA技巧ser_birthday 

But the documentation says it is fine. Any thoughts?

You don't need the "user_" prefix on "hometown", "education", and "birthday". You also don't need "_history" on "education". Try this in your API call instead:

'me?fields=id,name,link,email,hometown,education,birthday'