Use FQL instead, its a like SQL but for Facebook's data tables and easily covers data query you'de like to make. You won't have to use all of those /xx/xxx/xx calls, just know the tables and columns you are intereseted in.
$myQuery = "SELECT uid2 FROM friend WHERE uid1=me()";
$facebook->api( "/fql?q=" . urlencode($myQuery) )
Great interactive examples at http://developers.facebook.com/docs/reference/fql/