PHP: PUTting data fields with PHP cURL - Source: http://www.lornajane.net/posts/2009/PUTting-data-fields-with-PHP-cURL

PUTcURL.php

$data = array("a" => $a);

$ch = curl_init($this->_serviceUrl . $id);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "PUT");
curl_setopt($ch, CURLOPT_POSTFIELDS,http_build_query($data));

$response = curl_exec($ch);
if(!$response) {
    return false;
}