$HTTP_RAW_POST_DATA — Raw POST-Daten
$HTTP_RAW_POST_DATA enthält die originalen (raw) POST-Daten. Lesen Sie auch always_populate_raw_post_data
To get the Raw Post Data:
<?php $postdata = file_get_contents("php://input"); ?>
Please see the notes here:
http://us.php.net/manual/en/wrappers.php.php