problema con file_get_contents

[7owell]

Request address:
http://www.ringcentral.com/api/index.php

Parameters (GET or POST):

Name
Value
cmd
getCountries
typeResponse json | xml | var_damp

callback

Function_name

Required
YES
No

No

Description

Tells the server in which format to
return the result
Name of the callback function

getInternationalRates API.


Aqui esta lo que me mandaron ellos.