tru.ly social API PHP sample

tru.ly_decodesocial.php

<?php 

if ($_SERVER['REQUEST_METHOD'] == 'POST'){
  $sig = urldecode( $_REQUEST["signature"] );
  $data = urldecode( $_REQUEST["data"] );

  // TODO: REPLACE THIS WITH YOUR SECRET
  $secret = "9ffd989277b2058efe0542aff08c9301dc9fd9ce";
  $expected_sig = hash_hmac('sha256', $data, $secret, false);
  
  $error = null;
  // signature didn't match so don't trust the data
  if ($sig !== $expected_sig) {
     $error = "INVALID SIGNATURE!";
  }

}