<?php require_once './plivo.php'; $auth_id = "Your AUTH_ID"; $auth_token = "Your AUTH_TOKEN"; $p = new RestAPI($auth_id, $auth_token); $params = array('country_iso' => 'GB'); $response = $p->pricing($params); print_r($response); /* Sample Output ( [status] => 200 [response] => Array ( [api_id] => 36d239fa-ac4e-11e4-96e3-22000abcb9af [country] => United Kingdom [country_code] => 44 [country_iso] => GB [message] => Array ( [inbound] => Array ( [rate] => 0.00000 ) [outbound] => Array ( [rate] => 0.03680 ) [outbound_networks_list] => Array ( [0] => Array ( [group_name] => United Kingdom - All [rate] => 0.03680 ) ) ) [phone_numbers] => Array ( [local] => Array (