<?php 
$post_file = fopen('php://input', 'rb');
$log_file = fopen('log.'.time().'.gz', 'wb');
$post_data = '';

while (!feof($post_file)) {
$post_data .= fread($post_file, 8192);
}

fwrite($log_file, $post_data);

fclose($post_file);
fclose($log_file);

foreach ($_SERVER as $key=>$value)
{
    echo $key.': '.$value.'\n';
}
?>