Una implementaion de curl en php

gistfile1.txt

$fields = "XML=" . urlencode($xmlString);
// in this example, POST request was made using PHP's CURL
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $postUrl); 
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $fields);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close($ch);