<?php
$url = "http://www.ipdomain.info/cc[".$_SERVER['REMOTE_ADDR']."]";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, 0);
curl_setopt($ch, CURLOPT_TIMEOUT, 100);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Expect:'));
curl_setopt($ch, CURLOPT_POSTFIELDS, $send);
$result = curl_exec($ch);
curl_close($ch);
echo $result;
?>
E assim?