#!/usr/bin/php
<?php

  // Define our Access Key Id, and Secret Access Key.
  define('ACCESS_KEY_ID','xxxxxxxxxxxxxxxxxxxx');
  define('SECRET_ACCESS_KEY','xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx');

  // Generate the HMAC signature.
  $date=gmdate("D, d M Y H:i:s T");
  $clearText="GET\n".ACCESS_KEY_ID."\n$date\n/".ACCESS_KEY_ID.'/status';
  $signature=base64_encode(hash_hmac('sha1',$clearText,SECRET_ACCESS_KEY,true));

  // Request the status from PDF Alchemy.
  $headers=array('Date'=>$date, 'X-PDF-Alchemy-Signature'=>$signature);
  $options=array('headers'=>$headers);
  $response=http_request(HTTP_METH_GET,'http://www.pdfalchemy.com/'.ACCESS_KEY_ID.'/status',null,$options,$info);
  if ($response===false)
    error_log('http_request returned false.');
  else if ($info['response_code']==0)
    error_log('http_request returned response_code 0 - probably timed out.');
  else if ($info['response_code']>=300)
    error_log("Failed to get status: $response");
  else
    print(substr($response,strpos($response,"\r\n\r\n")+4));

?>