<?php
  /*
    International Surcharges EX:
    This example will pull DialogTech's
    international surcharge for transfers
    to a specific international number
  */

  // Create cURL resource
  $ch = curl_init(); 
  $baseuri = "https://secure.dialogtech.com/ibp_api.php?";

  // API Specific Static Parameters
  $action = "cost.get_surcharge";

  // Required User Parameters To Request the API
  $access_key = "foo";
  $secret_access_key = "bar";
  
  // Non required parameters used to request toe API
  $phone_list = "0115552001234|0115552527685";



  // Construct the full URL
  $full_url = $baseuri . "&action=" . $action .
    "&access_key=" . $access_key .
    "&secret_access_key=" . $secret_access_key .
    "&phone_list=" . $phone_list;


  // Set the URL
  curl_setopt($ch, CURLOPT_URL, $full_url);

  // Sets the return options of the cURL to return the actual result from the curl request, and FALSE on failure
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

  // Sets the $output variable to the result of the curl
  $output = curl_exec($ch);

  // Close curl resource to free up system resources
  curl_close($ch);

  // Echo the XML response to the page
  echo $output;
?>

curl -X ""

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE response [
        <!ELEMENT response (result,result_description,rates)>
        <!ELEMENT result (#PCDATA)>
        <!ELEMENT result_description (#PCDATA)>
        <!ELEMENT rates (rate+)>
        <!ELEMENT rate (phone_number,surcharge)>
        <!ELEMENT phone_number (#PCDATA)>
        <!ELEMENT surcharge (#PCDATA)>
        ]>
<response>
  <result>success</result>
  <result_description>
  </result_description>
  <rates>
    <rate>
      <phone_number>0115552001234</phone_number>
      <surcharge>0.0185</surcharge>
    </rate>
    <rate>
      <phone_number>0115552527685</phone_number>
      <surcharge>0.0182</surcharge>
    </rate>
  </rates>
</response>