/**
  * getUidsFromRequestIds
  * 
  * Obtain the uids from a gived requestids.
  * @param array $requestIds
  * @return array $uids 
  */
 public static function getUidsFromRequestIds($requestIds)
 {
     $appid = copperConfig::get('appId');
     $secret = copperConfig::get('appSecret');
     $uids = array();
     if (copperUtils::valid($requestIds, false)) {
         $app_token = file_get_contents('https://graph.facebook.com/oauth/access_token?client_id=' . $appid . '&client_secret=' . $secret . '&grant_type=client_credentials');
         //Get application token
         foreach ($requestIds as $key => $sent) {
             $request = file_get_contents('https://graph.facebook.com/' . $sent . '?' . $app_token);
             $request = json_decode($request);
             $uids[] = $request->to->id;
         }
     }
     return $uids;
 }
echo copperConfig::get('callbackUrl');
?>
';
      var CANVAS_URL  = '<?php 
echo copperConfig::get('canvasUrl');
?>
';
      <?php 
if (copperConfig::get('facebookActivate')) {
    ?>
        var SIGNED_REQUEST  = '<?php 
    echo htmlentities($_REQUEST['signed_request']);
    ?>
';
      <?php 
}
?>
    </script>
    <?php 
$fbInstance = copperConfig::get('fbInstance');
if (!empty($fbInstance)) {
    try {
        $friends = $fbInstance->facebook->api('/me/friends');
    } catch (Exception $exc) {
        copperConfig::doError("Error al intentrar inicializar el /me/ : " . $exc->getMessage());
        copperConfig::doError("Error al intentrar inicializar el /me/ con trace: " . $exc->getTraceAsString());
    }
    if (!empty($friends)) {
        copperUtils::setJsVars('myFriends', $friends);
    }
}