Here’s one example for getting twitter user data. The amount of results if limited though.
require('twitteroauth/twitteroauth.php');
function getTwitterData($username){
$consumer_key = “xxxxxxxxxxxxxxxxxxx”;
$consumer_secret = “xxxxxxxxxxxxxxxxxxx”;
$oauth_token = "xxxxxxxxxxxxxxxxxxx";
$oauth_token_secret = "xxxxxxxxxxxxxxxxxxx";
$connection = new TwitterOAuth($consumer_key, $consumer_secret, $oauth_token, $oauth_token_secret);
$user = $connection->get('https://api.twitter.com/1.1/users/show.json?screen_name='.$username);
return $user;
}