elbpdx

    def parse_signed_request
      signed_request = params['signed_request']
      @appdata = ''
      if signed_request.nil? or signed_request.empty?
        
      else
        encoded_sig, encoded_params = signed_request.split('.')
        decoded_sig = UrlSafeBase64.decode64(encoded_sig)
        decoded_params = Yajl::Parser.parse(UrlSafeBase64.decode64(encoded_params))
        @sigr = decoded_params

elbpdx

<?php
function parse_signed_request($signed_request, $secret) {
  list($encoded_sig, $payload) = explode('.', $signed_request, 2); 

  // decode the data
  $sig = base64_url_decode($encoded_sig);
  $jsondata = base64_url_decode($payload);
  $data = json_decode($jsondata, true);

  if (strtoupper($data['algorithm']) !== 'HMAC-SHA256') {

elbpdx

// If you put the signed_request php in a separate file, include it in your main page
<?php
include_once('lib/signed_request.php');
?>

// Then you need to assign the app_data param and key/value pairs to a JS variable
// The appSecret in this case is stored in the php config file
<script type="text/javascript">
  window.fb_signed_request = {app_data:'<?php echo grab_app_data($_REQUEST['signed_request'], AppInfo::appSecret()); ?>'};
</script>

elbpdx

<div id="fb-root"></div>
<script src="//connect.facebook.net/en_US/all.js"></script>
<script>
  FB.init({appId:'156294357760329', status:true, cookie:true, oauth:true, xfbml:true});
</script>

<script type="text/javascript" charset="utf-8">
  if (!document.querySelectorAll){document.write('<s' + 'cript lang' + 'uage="jav' + 'ascript" src="/static/web/js/qwery.min.js"></' + 'scr' + 'ipt>');}
  window.webtrendsAsyncInit = function() {
      var dcs=new Webtrends.dcs().init({dcsid:"YOUR_DCS_ID",timezone:-8,plugins:{facebook:{src:"/static/js/webtrends.fb.js"}}}).track();

elbpdx

(function(WT){
	if (!window.Webtrends){
		return; // ensuring Webtrends has loaded
	}
	function hello_transform(dcs){
		console.log("in my hello world transform");
		dcs.DCSext.myparam = 'hello world';
	}
	function hello_loader(dcs,config){
		dcs.addTransform(hello_transform,'all');

elbpdx

<script type="text/javascript">
  // this function is called by webtrends.js after it has loaded
  window.webtrendsAsyncInit = function() {
      var dcs=new Webtrends.dcs().init({dcsid:"your_dcs_id",timezone:-8})
      .addSelector('form input, form select',   // find form inputs, or form selects
         {
             domEvent:'onblur',  // which event to listen to?
             transform:function(dcs,o){
               // o is an 'options' object with o.element (dom element), o.args (object notation args)
               o.args['fieldname'] = o.element.id;

elbpdx

<script type="text/javascript">
  // this function is called by webtrends.js after it has loaded, the track, init method are chained
  window.webtrendsAsyncInit = function() {
      var dcs=new Webtrends.dcs().init({dcsid:"your_dcs_id",timezone:-8}).track();
      var dcs2=new Webtrends.dcs().init({dcsid:"your_2nd_dcs_id",timezone:-8}).track();
  };
  (function() {
      var s = document.createElement('script'); s.type="text/javascript"; s.async = true;
      s.src = 'http://s.webtrends.com/js/webtrends.js';
      var s2=document.getElementsByTagName("script")[0];s2.parentNode.insertBefore(s,s2);

elbpdx

<!--  
Inclusion of file inline, not using script injection forces 
load at a determinate point so no need for webtrendsAsyncInit function  
-->

<script src="/static/webtrends.js" type="text/javascript"></script>

<script type="text/javascript">
  // create and initialize which calls dcsGetId()
  var dcs=new Webtrends.dcs().init({dcsid:"YOUR_DCS_ID",timezone:-5}).track();